chore: fix and improve FeedbackWidget removal regex

[santamasa]

What changed? Why?

I updated the regular expressions used to remove FeedbackWidget from the code.
The previous patterns weren’t handling all edge cases, such as when there are other imports or attributes in the component.
The new regexes are more reliable and correctly remove the widget in various scenarios.

Notes to reviewers

The changes mainly affect how the FeedbackWidget is removed from both import statements and JSX components.
The new regexes ensure more robust matching and account for possible variations in the code.

How has it been tested?

These changes have been tested locally by running the script on several markdown and MDX files. No errors were encountered, and the widget was removed as expected.

Have you tested the following pages?

BaseWeb

• [] base.org
• [] base.org/names
• [] base.org/builders
• [] base.org/ecosystem
• [] base.org/name/jesse
• [] base.org/manage-names
• [] base.org/resources

BaseDocs

• [] docs.base.org
• [] docs sub-pages

[vercel]

@santamasa is attempting to deploy a commit to the Coinbase Team on Vercel.

A member of the Team first needs to authorize it.

[cb-heimdall]

🟡 Heimdall Review Status

Requirement	Status	More Info
Reviews	🟡 0/1	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 0 Sum 1