fix: copy paste new widget key generation

[rahulramesha]

Description

to generate new keys for every time we paste the issue

Fixes #7400
Fixes #7415
Fixes #7423
Fixes #7403

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Manual UI verification

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

Test coverage results 🧪

🔴 Total coverage has decreased

// Code coverage diff between base branch:release and head branch: copyPastekeyGeneration 

Status	File	% Stmts	% Branch	% Funcs	% Lines
🔴	total	54.86 (0)	36.63 (-0.01)	34.23 (0)	55.39 (0)
🔴	app/client/src/utils/autocomplete/TernServer.ts	50.47 (-0.24)	38.26 (-0.87)	36.21 (0)	55.08 (-0.27)

[vivekverma2312]

@rahulramesha I am able to repro #7415 on the deploy preview.

[vivekverma2312]

@rahulramesha

[vivekverma2312]

@rahulramesha Tested on deploy preview and working fine.

[vivekverma2312]

@rahulramesha #7403 is also working fine on the DP