Update icons to match Firefox Proton (1.25px)

[zapSNH]

Describe the PR I have found 3 icons that still use the Photon style.

• command-console.svg (App Menu > More Tools > Browser Toolbox)
• command-eyedropper.svg (App Menu > More Tools > Eyedropper)
• debugging-addons.svg (App Menu > More Tools > Extensions for Developers)
• tab-photon.svg (App Menu > History > Recently Closed Tabs)

This PR replaces them with new 1.25px ones. firefox-view.svg, flame.svg (in Nightly Private Browsing), and translations.svg are also included here but I don't know if they should be in this PR or a separate PR.

PR Type

• [x] Add: Add feature or enhanced.
• [ ] Fix: Bug fix or change default values.
• [ ] Clean: Refactoring.
• [ ] Doc: Update docs.

Related Issue

845 (for 1.5px icons)

Screenshots

Additional context

[black7375]

I really like the consistency of the icons. I'll check it out and merge it over the weekend when you're ready.