Update comment template

[AnjaliSonawane06]

What changed & why

Task / Issue link:

1. Updated standard comment mention template for IAssist and Icentral url links
2. Field level chnages on IA support tickets
3. notification log class override
4. user selection filetr query updated
   Summary of changes:

Type of change:

• Bug fix
• New feature / enhancement
• Configuration change (DocType, field, workflow, print format, etc.)
• Refactor / code cleanup
• Other (describe below)

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Risk & impact

Which modules / doctypes are affected?

Could this break any existing functionality?

• No impact on existing behaviour
• Low risk — minor change, isolated area
• Medium risk — touches shared logic or multiple doctypes
• High risk — core workflow, permissions, or data migration involved

If medium or high risk, describe the potential impact:

Has this been tested on a staging / demo site?

• Yes
• No (explain why below)

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Testing evidence

Test cases written?

• Yes — test cases have been written and are passing
• Not applicable for this change (explain below)

How was this manually tested?

Screenshots / screen recordings (if UI change):

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Task completion checklist

Before marking this PR as ready for review, confirm the following:

• Code follows the project's coding conventions and Frappe framework patterns
• No hardcoded values, credentials, or environment-specific config left in the code
• All custom fields / doctypes have proper naming (no test or temp names)
• bench migrate has been run and no errors thrown
• No console.log, print, or debug statements left in the code
• Relevant permissions have been checked (roles, field-level permissions)
• If a background job or scheduler is involved, it has been tested end-to-end
• Release notes have been updated for this change
• PR title clearly describes the change (not "fix" or "update") Follow convention
• This PR is focused — it does one thing and does not bundle unrelated changes

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Reviewer notes