fix: update eraElectionStatus for runtime upgrade v30 (#485)

* fix: docs

* build: docs

* fix: return message

* fix: remove try catch, and replace with simple conditional

* Update docs/src/openapi-v1.yaml

Co-authored-by: Zeke Mostov <[email protected]>

* Update src/services/pallets/PalletsStakingProgressService.ts

Co-authored-by: Zeke Mostov <[email protected]>

* Update src/services/pallets/PalletsStakingProgressService.ts

Co-authored-by: Zeke Mostov <[email protected]>

* add string to union type for electionStatus

* fix: return value for electionStatus

* fix: build docs

* fix: remove `erElectionStatus &&`

Co-authored-by: Zeke Mostov <[email protected]>