fix: Unavailable quota handling in quotacheck.sh file

[NirajC-Microsoft]

Purpose

This pull request introduces a minor update to the quota checking script. The change ensures that when no quota information is found for a model in a given region, the INSUFFICIENT_QUOTA flag is set to true. This improves the script's handling of missing quota data.

• Set INSUFFICIENT_QUOTA=true when no quota information is found for a model in a region in infra/scripts/checkquota.sh.
• ...

Does this introduce a breaking change?

• Yes
• No

How to Test

• Get the code

git clone [repo-address]
cd [repo-name]
git checkout [branch-name]
npm install

• Test the code

What to Check

Verify that the following are valid

• ...

Other Information