fix: Use undefined as default value for input type number and integer

[vicky-primathon]

Description

Use undefined as default value for input type number and integer

Fixes # (issue)

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

How Has This Been Tested?

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 increased

// Code coverage diff between base branch:release and head branch: fix/input-widget-default-value 

Status	File	% Stmts	% Branch	% Funcs	% Lines
🟢	total	54.89 (0.02)	36.92 (0.05)	34.24 (0.01)	55.41 (0.02)
🟢	app/client/src/widgets/InputWidget/widget/index.tsx	60.4 (6.86)	38.89 (16.03)	68.18 (4.54)	62.5 (7.18)

[ashit-rath]

Closing this in favor of #7251