chore: update model name from gpt-4.1-mini to gpt4.1-mini

[Priyanka-Microsoft]

Purpose

• ...
  This pull request standardizes the naming convention for the gpt4.1-mini model across documentation and scripts to ensure consistency and avoid confusion. All references to gpt-4.1-mini have been updated to gpt4.1-mini (removing the dash), and related keys in scripts have been aligned accordingly.

Documentation updates:

• Updated all references in docs/QuotaCheck.md from gpt-4.1-mini to gpt4.1-mini in usage instructions, examples, and model lists to maintain consistency throughout the documentation. [1] [2] [3]

Script updates:

• Changed the MIN_CAPACITY associative array key in infra/scripts/checkquota.sh to use OpenAI.GlobalStandard.gpt4.1-mini instead of OpenAI.Standard.gpt-4.1-mini for accurate quota checks.
• Updated the DEFAULT_MODEL_CAPACITY variable in infra/scripts/quota_check_params.sh to use gpt4.1-mini instead of gpt-4.1-mini.

Template Metadata:

• Updated the templateHash in infra/main.json to reflect the changes made to the ARM template, ensuring version tracking and integrity.

TASK ID : https://dev.azure.com/CSACTOSOL/CSA%20Solutioning/_workitems/edit/26691

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

• ...

Other Information