Remove welcome discovery flag

[bbirman]

No description provided.

[github-actions]

	1 Error
🚫	Please re-submit this PR to the dev branch, we may have already fixed your issue.

Generated by 🚫 Danger

[github-actions]

	1 Warning
⚠️	Static Analysis found an issue with one or more files you modified. Please fix the issue(s).

Clang Static Analysis Issues

File	Type	Category	Description	Line	Col
SalesforceSDKManager	Nil value used as mutex for @synchronized() (no synchronization will occur)	Logic error	Nil value used as mutex for @synchronized() (no synchronization will occur)	144	5
SalesforceSDKManager	Nil value used as mutex for @synchronized() (no synchronization will occur)	Logic error	Nil value used as mutex for @synchronized() (no synchronization will occur)	156	5

Generated by 🚫 Danger

[brandonpage]

Build fails with:
xcodebuild: error: The workspace named "SalesforceMobileSDK" does not contain a scheme named "AuthFlowTester". The "-list" option can be used to find the names of the schemes in the workspace.

Should be expected when building against master.

[github-actions]

	Tests	Passed ☑️	Skipped	Failed ❌️
SalesforceSDKCore iOS ^26 Test Results	494 ran	492 ✅		2 ❌

Test	Result
SalesforceSDKCore iOS ^26 Test Results
SFSDKEncryptedPushNotificationTests.testNotificationTransformNonRSASecret	❌ failure
SFUserAccountManagerTests.testUserAccountEncoding	❌ failure

• View SalesforceSDKCore iOS ^26 Test Results

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 62.40%. Comparing base (fd5b602) to head (e76ae69).
⚠️ Report is 11 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3972      +/-   ##
==========================================
- Coverage   62.52%   62.40%   -0.13%     
==========================================
  Files         250      250              
  Lines       22480    22474       -6     
==========================================
- Hits        14055    14024      -31     
- Misses       8425     8450      +25     

Components	Coverage Δ
Analytics	70.78% <ø> (ø)
Common	70.58% <ø> (ø)
Core	52.20% <81.81%> (-0.20%)	⬇️
SmartStore	73.66% <ø> (ø)
MobileSync	87.66% <ø> (ø)

Files with missing lines	Coverage Δ
...forceSDKCore/Classes/Common/SalesforceSDKManager.m	57.06% <ø> (ø)
...ore/Classes/OAuth/DomainDiscoveryCoordinator.swift	85.71% <100.00%> (-4.29%)	⬇️

... and 7 files with indirect coverage changes

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[github-actions]

	Tests	Passed ✅	Skipped	Failed
SalesforceSDKCore iOS ^18 Test Results	494 ran	494 ✅

Test	Result
No test annotations available

• View SalesforceSDKCore iOS ^18 Test Results

[bbirman]

For the test failures, one of them was fixed in dev (#3937) and the other is a known flapper (need to fix but unrelated to welcome)