Update SalesforceAnalyticsTestApp to use scene lifecycle

[bbirman]

No description provided.

[github-actions]

	Tests	Passed ✅	Skipped	Failed
SalesforceAnalytics iOS ^26 Test Results	19 ran	19 ✅

Test	Result
No test annotations available

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 68.26%. Comparing base (4d7e758) to head (9b160f2).
⚠️ Report is 10 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #4081      +/-   ##
==========================================
- Coverage   70.99%   68.26%   -2.74%     
==========================================
  Files         246      246              
  Lines       21501    21501              
==========================================
- Hits        15265    14678     -587     
- Misses       6236     6823     +587     

Components	Coverage Δ
Analytics	70.78% <ø> (ø)
Common	70.79% <ø> (-0.19%)	⬇️
Core	61.77% <ø> (-4.19%)	⬇️
SmartStore	73.44% <ø> (-0.16%)	⬇️
MobileSync	88.79% <ø> (-0.03%)	⬇️
see 34 files with indirect coverage changes

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[github-actions]

	Tests	Passed	Skipped	Failed ❌️
AuthFlowTester UI Test Results all	1 ran			1 ❌

Test	Result
AuthFlowTester UI Test Results all
AuthFlowTesterUITests.xctest
LegacyLoginTests.testCAOpaque_DefaultScopes_WebServerFlow()	❌ failure

[github-actions]

	Tests	Passed ✅	Skipped	Failed
SalesforceAnalytics iOS ^18 Test Results	19 ran	19 ✅

Test	Result
No test annotations available