fix(filtering): Avoid resetting values for number inputs #6973

[dkamburov]

Closes #6973

We must make sure, we are not introducing regression in any of the following:

• [IE11] igx-grid - Filtering is cleared when clicking filtering chip if resourceString.igx_grid_filter_row_placeholder is set to Japanese character. #3504
• Filtering row: no chip is created while typing Japanese characters on Edge #3599
• [igx-grid][IE11] filtering problems with IME mode. #4636

Additional information (check all that apply):

• Bug fix
• New functionality
• Documentation
• Demos
• CI/CD

Checklist:

• All relevant tags have been applied to this PR
• This PR includes unit tests covering all the new code
• This PR includes API docs for newly added methods/properties
• This PR includes feature/README.MD updates for the feature docs
• This PR includes general feature table updates in the root README.MD
• This PR includes CHANGELOG.MD updates for newly added functionality
• This PR contains breaking changes
• This PR includes ng update migrations for the breaking changes
• This PR includes behavioral changes and the feature specification has been updated with them