Investigate Performance unit test failures on Catalyst

[paulb777]

Now that FirebasePerformance is open source, it build successfully for Catalyst. However there are several unit test failures:

export FPR_UNSWIZZLE_AVAILABLE="1"
export FPR_AUTOPUSH_ENV="0"
./scripts/test_catalyst.sh FirebasePerformance test

Failing tests:
	FirebasePerformance-Unit-unit:
		-[FIRTraceTest testMultipleSessionIds]
		-[FIRTraceTest testSessionId]
		-[FIRTraceTest testTraceStartedNotStoppedIncrementsAMetric]
		-[FPRAppActivityTrackerTest testActiveTraceChanging]
		-[FPRAppActivityTrackerTest testActiveTraceIsNilWhenAppChangesStatesAndDataCollectionToggledFromDisabled]
		-[FPRAppActivityTrackerTest testActiveTraceIsNilWhenAppChangesStatesAndDataCollectionToggledFromEnabled]
		-[FPRAppActivityTrackerTest testActiveTraceWhenAppChangesStates]
		-[FPRAppActivityTrackerTest testActiveTraceWhenDataCollectionDisabled]
		-[FPRAppActivityTrackerTest testApplicationStateManagement]
		-[FPRGDTRateLimiterTest testRateLimitingAlgorithmDropsNetworkEventsWhenExceedsBurstSize]
		-[FPRNSURLSessionInstrumentTest testDelegateURLSessionTaskDidSendBodyDataTotalBytesSentTotalBytesExpectedToSend]
		-[FPRNetworkTraceTest testMultipleSessionIds]
		-[FPRNetworkTraceTest testSessionId]
		-[FPRObjectInstrumentorTest testCopySelectorFromClassThatModifies]
		-[FPRSessionManagerTest testSessionIdExistance]
		-[FPRSessionManagerTest testSessionIdUpdation]
		-[FPRSessionManagerTest testSessionIdUpdationThrowsNotification]
		-[FPRTraceBackgroundActivityTrackerTest testBackgroundTracking]
		-[FPRTraceBackgroundActivityTrackerTest testForegroundTracking]