bug(metadata): metadata update for non-committee validators triggers indices change

[olegshmuelov]

Description

1. Unexpected indices change for Non-Committee Validators
   When updating metadata for a non-committee validator, the update unexpectedly triggers an indices change. This behavior is incorrect as the validator is not part of the committee and should not affect the indices change.

2. Indices change triggered with no actual metadata change (needs reproduction)
   In certain scenarios, an indices change is triggered without any change in the metadata update itself. This issue needs further reproduction and investigation to confirm.

Expected behavior

• Metadata updates for non-committee validators should not trigger indices changes.
• If there is no actual change in the metadata, no indices change should be triggered.