V3.3.0 pt_BR

[Tgentil]

This PR is a continuation of the work on the branch v3.3.0, diverging from the master. It includes updates to the pt_BR translations that refine the changes introduced in the #72 PR. I closed the previous PR #77 following @aryomuzakki's suggestion to direct it properly to the v3.3.0 branch.

Changes include:

• Requesting the WhatsApp Web version in the Bug Report to better identify problems in future issues.
• Minor adjustments such as fixing indentation by removing a blank line in line 11 of the _locales files.
• Updating the version of the extension in the manifest.

Note: With this PR, the only remaining updates needed to release version 3.3.0 are the Deutsch translations.

[Tgentil]

@LukasLen the code is ready for a new review