Updated default_area attribute in manifest.json

[lloan]

New feature description

To ensure the mac icon is shown in the toolbar after installation, the default_area attribute has been updated to navbar

default_area

https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/manifest.json/browser_action#syntax

Defines the part of the browser in which the button is initially placed. This is a string that may take one of four values:

• "navbar": the button is placed in the main browser toolbar, alongside the URL bar.
• "menupanel": the button is placed in a popup panel.
• "tabstrip": the button is placed in the toolbar that contains browser tabs.
• "personaltoolbar": the button is placed in the bookmarks toolbar.

This property is only supported in Firefox.

This property is optional, and defaults to "menupanel".

Firefox remembers the default_area setting for an extension, even if that extension is uninstalled and subsequently reinstalled. To force the browser to acknowledge a new value for default_area, the id of the extension must be changed.

An extension can't change the location of the button after it has been installed, but the user may be able to move the button using the browser's built-in UI customization mechanism.

Screenshot (if applicable)

Not applicable.

How to test

Checklist

• [ ] l10n changes have been submitted to the l10n repository, if any.
• [ ] All acceptance criteria are met.
• [ ] All UI revisions follow the coding standards, and use Protocol tokens where applicable (see /frontend/src/styles/tokens.scss).
• [ ] Commits in this PR are minimal and have descriptive commit messages.

[lloan]

@lloan Did you build/test this in Chrome? It may have a similar issue to the current Menus permission.

Not at all, not yet. I just went and opened this based on your comment. I'll turn to draft as I'm currently a bit swamped with the free user onboarding experience.

[maxxcrawford]

Heads up. I'll add this line in #530.