fix: Fix for Chat history thread title is saved with space

[Pavan-Microsoft]

Purpose

Fix for Chat history thread title is saved with space

Bug 9546: [QA] - CWYD - Chat history thread title is saved with space

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

What to Check

Deploy CWYD with GPT 4o
Go to CWYD Admin and enable chat history if not enabled
Go to CWYD web url and save chat history conversations
Click on Show chat history button and click on Edit icon for a chat thread
Remove the text in chat thread title and update with 1 empty space
Click on Tick icon
Expected behavior: Chat thread title should not be saved with empty space
Actual behavior: Chat thread title saved with empty space

[github-actions]

Coverage Report •

File	Stmts	Miss	Cover	Missing
code/backend/api
chat_history.py	210	177	15%	24–28, 32–33, 35, 37, 44–47, 49, 51, 55–57, 63, 68–71, 76–78, 80–82, 85–88, 91, 94–95, 100, 102–104, 109–113, 116, 119–120, 122–123, 126–128, 131, 134–135, 145–149, 152, 154–156, 161–163, 165–166, 169, 172–173, 175–176, 179–181, 184, 188–189, 199, 204, 215, 219–221, 226–228, 230, 232, 235, 237–240, 249–251, 254, 257, 259, 268–270, 275–277, 279, 281, 284, 288–290, 292, 295–296, 302, 304, 309, 313, 322–324, 332–334, 336–338, 340–343, 346–348, 351, 354–356, 359, 363–365, 373, 379–380, 382, 384–385, 387, 394, 401, 403, 417–419, 424–427, 432–435, 439, 441, 446, 448–450, 457–460
TOTAL	3109	915	70%

Tests	Skipped	Failures	Errors	Time
301	0 💤	0 ❌	0 🔥	48.475s ⏱️