This PR modifies `named_reserve()` in frame-balances to use checked math
instead of defensive saturating math.

The use of saturating math relies on the assumption that the sum of the
values will always fit in `u128::MAX`. However, there is nothing
preventing the implementing pallet from passing a larger value which
overflows. This can happen if the implementing pallet does not validate
user input and instead relies on `named_reserve()` to return an error
(this saves an additional read)

This is not a security concern, as the method will subsequently return
an error thanks to `<Self as ReservableCurrency<_>>::reserve(who,
value)?;`. However, the `defensive_saturating_add` will panic in
`--all-features`, creating false positive crashes in fuzzing operations.

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Co-authored-by: cmd[bot] <41898282+github-actions[bot]@users.noreply.github.com>
(cherry picked from commit f373af0d)

Backport #7322 into `stable2409` from bkontur.

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Co-authored-by: Branislav Kontur <bkontur@gmail.com>

At the moment, the delivery fees are being subtracted twice if the
`jit_withdraw` mode is enabled, resulting in assets being trapped. [This
is an example of
it](https://dev.papi.how/explorer/0x4a89cc6d157c28bdf42a1846ea33fffaf1f33d7091cefdd22a53075c73c5886d#networkId=paseo_asset_hub&endpoint=light-client).
This does not happen in 2412 anymore after #4834.

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Co-authored-by: Adrian Catangiu <adrian@parity.io>
Co-authored-by: Francisco Aguirre <franciscoaguirreperez@gmail.com>
Co-authored-by: command-bot <>

This reverts commit 512e5151.

This reverts commit 2afc17f4.

Backport #7158 into `stable2409` from lexnv.

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Co-authored-by: Alexandru Vasile <60601340+lexnv@users.noreply.github.com>

Backport #6971 into `stable2409` from alexggh.

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Signed-off-by: Alexandru Gheorghe <alexandru.gheorghe@parity.io>
Co-authored-by: Alexandru Gheorghe <49718502+alexggh@users.noreply.github.com>
Co-authored-by: Alexandru Gheorghe <alexandru.gheorghe@parity.io>

Backport #6973 into `stable2409` from alexggh.

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Co-authored-by: Alexandru Gheorghe <49718502+alexggh@users.noreply.github.com>
Co-authored-by: Alexandru Gheorghe <alexandru.gheorghe@parity.io>

Backport #6807 into `stable2409` from alexggh.

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Co-authored-by: Alexandru Gheorghe <49718502+alexggh@users.noreply.github.com>
Co-authored-by: Alexandru Gheorghe <alexandru.gheorghe@parity.io>

Backport #6604 into `stable2409` from bkchr.

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Co-authored-by: Bastian Köcher <info@kchr.de>

Backport #7013 into `stable2409` from bkchr.

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Backport #5526 into `stable2409` from ordian.

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Backport #7116 into `stable2409` from alexggh.

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Backport #6855 into `stable2409` from alistair-singh.

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Co-authored-by: Adrian Catangiu <adrian@parity.io>

Backport #7050 into `stable2409` from skunert.

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Backport #6505 into `stable2409` from seadanda.

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Co-authored-by: command-bot <>

Backport #6864 into `stable2409` from alexggh.

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Backport #6652 into `stable2409` from niklasad1.

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Co-authored-by: Niklas Adolfsson <niklasadolfsson1@gmail.com>

Backport #6459 into `stable2409` from franciscoaguirre.

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Co-authored-by: Francisco Aguirre <franciscoaguirreperez@gmail.com>
Co-authored-by: Branislav Kontur <bkontur@gmail.com>
Co-authored-by: Egor_P <egor@parity.io>

Backport #6506 into `stable2409` from Dinonard.

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Co-authored-by: EgorPopelyaev <egor@parity.io>

Backport #6696 into `stable2409` from alexggh.

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Signed-off-by: Alexandru Gheorghe <alexandru.gheorghe@parity.io>
Co-authored-by: Alexandru Gheorghe <49718502+alexggh@users.noreply.github.com>
Co-authored-by: Alexandru Gheorghe <alexandru.gheorghe@parity.io>

Backport #6729 into `stable2409` from alexggh.

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Signed-off-by: Alexandru Gheorghe <alexandru.gheorghe@parity.io>
Co-authored-by: Alexandru Gheorghe <49718502+alexggh@users.noreply.github.com>
Co-authored-by: Alexandru Gheorghe <alexandru.gheorghe@parity.io>

Backport #6781 into `stable2409` from bkontur.

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Co-authored-by: Branislav Kontur <bkontur@gmail.com>

Backport #5311 into `stable2409` from Doordashcon.

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Co-authored-by: Doordashcon <jesse.chejieh@gmail.com>