RFR: 6683: Mouse over for Event Thread should show the various thread IDs

[Virag Purnam]

Added "Thread Id" information for Mouse Hover on Event Thread as well as in properties view.

**Before:** No information on Hover
<img width="958" alt="EventThread_Before" src="https://github.com/user-attachments/assets/b14f2ad6-72e6-4dac-be56-fe00eaf4fb42">

**After:** Thread Id shown on Hover
<img width="959" alt="EventThread_After" src="https://github.com/user-attachments/assets/5d56d806-9741-4e8f-8945-f6ee991d25b4">

**Before:** Only Thread Description shown in properties view
<img width="957" alt="Properties_Before" src="https://github.com/user-attachments/assets/44adfc75-6c43-404b-a365-b37938962cf9">


**After:** Along with Thread Description, Thread Id also shown in properties view
<img width="958" alt="Properties_After" src="https://github.com/user-attachments/assets/4bdad8d5-ff5e-4e13-af52-72fbba2fb84c">

Could you please review the changes? Please suggest if anything more is needed with this enhancement request.

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Commit messages:
 - 6683: Mouse over for Event Thread should show the various thread IDs

Changes: https://git.openjdk.org/jmc/pull/593/files
  Webrev: https://webrevs.openjdk.org/?repo=jmc&pr=593&range=00
  Issue: https://bugs.openjdk.org/browse/JMC-6683
  Stats: 205 lines in 10 files changed: 152 ins; 35 del; 18 mod
  Patch: https://git.openjdk.org/jmc/pull/593.diff
  Fetch: git fetch https://git.openjdk.org/jmc.git pull/593/head:pull/593

PR: https://git.openjdk.org/jmc/pull/593