Modal and InputText updates/fixes

[krittick]

Summary

This PR does the following:

1. Removes Item inheritance from InputText as it's not needed for the latter to work
2. Removes weights from Modal as it's not needed to determine whether a component will fit or not (only one input text fits per row, and only 5 rows are allowed).
3. Fixes args/kwargs usage (includes change from Update input_text.py #984)
4. Updates examples to better reflect the above change

Checklist

• If code changes were made then they have been tested.
  • I have updated the documentation to reflect the changes.
• If type: ignore comments were used, a comment is also left explaining why
• This PR fixes an issue.
• This PR adds something new (e.g. new method or parameters).
• This PR is a breaking change (e.g. methods or parameters removed/renamed)
• This PR is not a code change (e.g. documentation, README, typehinting, examples, ...)