[MS-1156] Change TokenizableString from Parcelable to Serializable

[meladRaouf]

JIRA ticket
Will be released in: 2025.3.0

Root cause analysis (for bugfixes only)

• First known affected version: 2025.3.0
• Check the jira ticket for more info on how to get this issue.

Notable changes

• This PR fixes a crash that occurs when the app is moved to the background during the login flow. The crash is caused by a NotSerializableException for TokenizableString.Raw because LoginParams implements StepParams (which is Serializable) but TokenizableString and its subclasses were not serializable.
• Reason for not using Parcelable:
  The StepParams interface is used widely across the app and is already Serializable. Converting everything to Parcelable would require refactoring all existing StepParams implementations,

Testing guidance

• Login and move the app to background and restore it should be OK

Additional work checklist

• Effect on other features and security has been considered
• Design document marked as "In development" (if applicable)
• External (Gitbook) and internal (Confluence) Documentation is up to date (or ticket created)
• Test cases in Testiny are up to date (or ticket created)
• Other teams notified about the changes (if applicable)

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[luhmirin-s]

Should this be on the release branch?