Translate: 100% nightly for Android

[atuchin-m]

Related brave/brave-browser#24957

[kjozwiak]

For the above, I'm just going to check/ensure that Brave Translate gets enabled via Girffin rather than QAing the general functionality like I usually do as @stephendonner already went through it via brave/brave-browser#23770 (comment) & brave/brave-browser#23768 (comment) and confirmed that things are working as expected via 1.43.x. We're just enabling it by default via Griffin.

Used instructions via brave/brave-core#10408 (comment) as per the following:

Nightly channel

Verification PASSED on Pixel 6 running Android 13 via the following PR(s):

Brave | 1.45.2 Chromium: 105.0.5195.37 (Official Build) canary (32-bit)
--- | ---
Revision | 5f67e9f258cc28ab970e57572290edf1863ee3c5-refs/branch-heads/5195@{#621}
OS | Android 13; Build/TP1A.220624.021

• installed 1.45.2 Chromium: 105.0.5195.37 and ensured that BraveTranslateAndroidStudy wasn't under brave://version
• visited https://speigel.de and ensured that the translation UI wasn't visible as the Griffin study hasn't loaded/come into affect

Example	Example

• restarted the browser and ensured BraveTranslateAndroidStudy:Enabled via brave://version
• visited https://speigel.de and ensured that the Brave Translate UI appeared
• clicked on English and ensured that the page was being translated

Example	Example	Example

BETA channel

Verification PASSED on Pixel 6 running Android 13 via the following PR(s):

Brave | 1.43.79 Chromium: 104.0.5112.102 (Official Build) beta (32-bit)
--- | ---
Revision | 8e5396254975ef939f2ef7d0bd334e48a052b536-refs/branch-heads/5112@{#1478}
OS | Android 13; Build/TP1A.220624.021

• ensured that BraveTranslateAndroidStudy doesn't appear under brave://version after restarting the browser
• ensured that visiting https://speigel.de doesn't trigger the Brave Translate UI at the bottom of the page

Example	Example

Release channel

Verification PASSED on Pixel 6 running Android 13 via the following PR(s):

Brave | 1.42.97 Chromium: 104.0.5112.102 (Official Build) (32-bit)
--- | ---
Revision | 8e5396254975ef939f2ef7d0bd334e48a052b536-refs/branch-heads/5112@{#1478}
OS | Android 13; Build/TP1A.220624.021

• ensured that BraveTranslateAndroidStudy doesn't appear under brave://version after restarting the browser
• ensured that visiting https://speigel.de doesn't trigger the Brave Translate UI at the bottom of the page

Example	Example