Update localStoreReleaseTarget so it is a no-op for a non-existent target

[MarkDuckworth]

Seeking input on this solution. There appear to be a handful of other functions that would need to be updated if this is the path we want to take.

[changeset-bot]

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Latest commit: e9d95a7

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[google-oss-bot]

Size Report ¹

Affected Products

• @firebase/firestore

  Type	Base (56fbe52)	Merge (685df4c)	Diff
  browser	391 kB	392 kB	+86 B (+0.0%)
  main	611 kB	611 kB	+110 B (+0.0%)
  module	391 kB	392 kB	+86 B (+0.0%)
  react-native	392 kB	392 kB	+86 B (+0.0%)

• bundle

  Type	Base (56fbe52)	Merge (685df4c)	Diff
  firestore (Persistence)	319 kB	319 kB	+71 B (+0.0%)
  firestore (Query Cursors)	258 kB	258 kB	+71 B (+0.0%)
  firestore (Query)	256 kB	256 kB	+71 B (+0.0%)
  firestore (Read data once)	246 kB	246 kB	+71 B (+0.0%)
  firestore (Read Write w Persistence)	339 kB	339 kB	+71 B (+0.0%)
  firestore (Realtime updates)	246 kB	246 kB	+71 B (+0.0%)

• firebase

  Type	Base (56fbe52)	Merge (685df4c)	Diff
  firebase-compat.js	800 kB	800 kB	+67 B (+0.0%)
  firebase-firestore-compat.js	349 kB	349 kB	+67 B (+0.0%)
  firebase-firestore.js	455 kB	455 kB	+86 B (+0.0%)

Test Logs

• Base (56fbe52): https://github.com/firebase/firebase-js-sdk/actions/runs/16356336772
• Merge (685df4c): https://github.com/firebase/firebase-js-sdk/actions/runs/16375245292

1. https://storage.googleapis.com/firebase-sdk-metric-reports/jE7MSEmV55.html