[SDK-758] Lock the pre-init switch failure result

[joaodordio]

📝 Summary

A switchProject before init reports switchedWithWarnings when start fails, and switchedCleanly when it succeeds.

🎟️ Jira Ticket: SDK-758

📖 Description

switchProject before initialization already forwarded start()'s result. This locks that in tests and in the changelog.

A failed start() (the first in-app sync is the usual cause) reports .switchedWithWarnings. A successful one reports .switchedCleanly. Android now reports the same two results. On Android the failure signal is a timeout or an exception from background initialization, not a failed in-app sync. Reasoning is on the Jira ticket.

Targets feature/SDK-674-switch-project. Independent of SDK-757. Android: Iterable/iterable-android-sdk#1101

🧪 How to test?

SwitchProjectGateTests:

• testSwitchProjectBeforeInitializeReportsCleanlyWhenStartSucceeds
• testSwitchProjectBeforeInitializeReportsWarningsWhenStartFails

🧾 Changelog

Updated the unreleased switchProject entry. A pre-init switch reports .switchedCleanly when start() succeeds and .switchedWithWarnings when it fails.

📹 Loom recording if applicable

N/A

🐞 Github Issues solved

None

📚 Docs PR if applicable

No docs PR. switchProject is not in iterable-docs yet. That write-up is SDK-676, and this result contract is noted there.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 75.11%. Comparing base (62412c6) to head (2f54900).

Additional details and impacted files

@@                        Coverage Diff                         @@
##           feature/SDK-674-switch-project    #1094      +/-   ##
==================================================================
+ Coverage                           75.02%   75.11%   +0.09%     
==================================================================
  Files                                 118      118              
  Lines                               10618    10618              
==================================================================
+ Hits                                 7966     7976      +10     
+ Misses                               2652     2642      -10     

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