Configure reporting potential errors encountered during configuration call

[jhaven-stytch]

Changes:

1. Instead of just reporting "true" when configuration has finished, return a new InitializationStatus class that gives visibility into if it was completely successful, or if there were any errors. In the case of errors, we silently allow them and fallback to default values. This way, developers know if something went wrong.
2. Previously, we rejected multiple attempts to configure the Stytch client (because it's a heavy operation). However, if something went wrong, a developer might want to retry, so we let them. Keep the warning, though, because it's still true
3. Updates tests as appropriate (no more short circuit tests)

Notes:

Checklist:

• I have verified that this change works in the relevant demo app, or N/A
• I have added or updated any tests relevant to this change, or N/A
• I have updated any relevant README files for this change, or N/A

[jhaven-stytch]

Code Coverage

Overall Project	71.55% -0.27%	🍏
Files changed	75.16%	❌

File	Coverage
ConfigurationManager.kt	84.01% -7.4%	🍏
InitializationStatus.kt	66.67% -33.33%	❌
StytchClient.kt	65.63% -1.55%	❌
StytchB2BClient.kt	59% -1.27%	❌