fix: Updated solution suffix logic in main.bicep

[NirajC-Microsoft]

This pull request modifies the logic for generating the solutionPrefix variable in the infra/main.bicep file to improve uniqueness and ensure consistency. The change adjusts the parameters used in the uniqueString function and their order.

Key change:

• Improved solutionPrefix uniqueness logic:
  • Updated the uniqueString function to include resourceGroup().name and reordered the parameters to prioritize subscription().id, environmentName, and resourceGroup attributes. This ensures a more unique and consistent prefix generation. ([infra/main.bicepL72-R72](https://github.com/microsoft/document-generation-solution-accelerator/pull/516/files#diff-7ef659fc9cf6968e718894d300490b14ea7a52091e7d4bcffae3a5029ac721d4L72-R72))## Purpose

• ...

Does this introduce a breaking change?

• Yes
• No

Golden Path Validation

• I have tested the primary workflows (the "golden path") to ensure they function correctly without errors.

Deployment Validation

• I have validated the deployment process successfully and all services are running as expected with this change.

What to Check

Verify that the following are valid

• I have built and tested the code locally and in a deployed app
• For frontend changes, I have pulled the latest code from main, built the frontend, and committed all static files.
• This is a change for all users of this app. No code or asset is specific to my use case or my organization.

Other Information