Filesearch: Added expandable textbox

[akanshaaa19]

target issue is #3164

[github-actions]

🚀 Deployed on https://deploy-preview-3174--glific-frontend.netlify.app

[codecov]

Codecov Report

Attention: Patch coverage is 90.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 81.70%. Comparing base (9297c0b) to head (ebfa58c).
Report is 3 commits behind head on master.

Files with missing lines	Patch %	Lines
...ers/Assistants/CreateAssistant/CreateAssistant.tsx	88.88%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3174      +/-   ##
==========================================
+ Coverage   81.64%   81.70%   +0.05%     
==========================================
  Files         330      330              
  Lines       10494    10503       +9     
  Branches     2192     2193       +1     
==========================================
+ Hits         8568     8581      +13     
+ Misses       1312     1309       -3     
+ Partials      614      613       -1     

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[cypress]

Glific    Run #5480

Run Properties:   Passed #5480  •  165fc3bc2b ℹ️: Merge ebfa58c55ff9cc2c19fb2a169a97ed971ea7fc46 into 9297c0b157699d9e7d9ec79a7ac3...

Project	Glific
Branch Review	enhancement/assistants
Run status	Passed #5480
Run duration	26m 26s
Commit	165fc3bc2b ℹ️: Merge ebfa58c55ff9cc2c19fb2a169a97ed971ea7fc46 into 9297c0b157699d9e7d9ec79a7ac3...
Committer	Akansha Sakhre
View all properties for this run ↗︎

---

Test results
Failures	0
Flaky	0
Pending	0
Skipped	0
Passing	169
View all changes introduced in this branch ↗︎

[kurund]

Looks good.