Brave News: new regions enable pref by default (fr_FR and de_DE)

[petemill]

Add fr_FR and de_DE to the list of locales that will result in the user having News enabled by default.

Test Plan

0. Set default region and language in OS to fr_FR or de_DE
1. Run fresh profile
2. Verify locale at brave://rewards-internals/ and click the "Ad diagnostics", check locale field is the intended one.
3. Confirm Brave News shows by default on the NTP

Example/Template for STR/Cases can be used from brave/brave-core#20197 (comment). Please feel free to add any other checks/verifications.

[kjozwiak]

Removing OS/Android as the above won't be verifiable till #33267 is addressed. Once #33267 is fixed, we'll run through the same STR/Cases that were completed via brave/brave-core#20197 (comment).

[kjozwiak]

The above requires 1.58.134 or higher for 1.58.x verification 👍

[stephendonner]

Verification PASSED using

Brave | 1.58.134 Chromium: 117.0.5938.140 (Official Build) (x86_64)
-- | --
Revision | b0942733988798287d53c996e097f756d614a059
OS | macOS Version 14.1 (Build 23B5046f)

fr_FR - PASSED

Steps:

0. set my macOS region & language to France and fr_FR, respectively
1. installed 1.58.134
2. launched Brave
3. confirmed French (France) language in brave://settings/languages
4. opened brave://rewards-internals/
5. clicked on the Ad diagnostics tab
6. confirmed Locale: fr-FR string
7. opened a new-tab page
8. opted-in to Brave News
9. confirmed locale-specific sources displayed

example	example	example	example	example	example

de_DE - PASSED

Steps:

0. set my macOS region & language to Germany and de_DE, respectively
1. installed 1.58.134
2. launched Brave
3. confirmed German (Germany) language in brave://settings/languages
4. opened brave://rewards-internals/
5. clicked on the Ad diagnostics tab
6. confirmed Locale: de-DE string
7. opened a new-tab page
8. opted-in to Brave News
9. confirmed locale-specific sources displayed

example	example	example	example	example	example

[btlechowski]

Verification PASSED

Brave	1.58.134 Chromium: 117.0.5938.140 (Official Build) (64-bit)
Revision	b0942733988798287d53c996e097f756d614a059
OS	Linux

fr_FR - PASSED

Steps:

0. set my macOS region & language to France and fr_FR, respectively
1. installed 1.58.134
2. launched Brave
3. confirmed French (France) language in brave://settings/languages
4. opened brave://rewards-internals/
5. clicked on the Ad diagnostics tab
6. confirmed Locale: fr-FR string
7. opened a new-tab page
8. opted-in to Brave News
9. confirmed locale-specific sources displayed

de_DE - PASSED

Steps:

0. set my macOS region & language to Germany and de_DE, respectively
1. installed 1.58.134
2. launched Brave
3. confirmed German (Germany) language in brave://settings/languages
4. opened brave://rewards-internals/
5. clicked on the Ad diagnostics tab
6. confirmed Locale: de-DE string
7. opened a new-tab page
8. opted-in to Brave News
9. confirmed locale-specific sources displayed

[kjozwiak]

Verification PASSED on Win 10 x64 using the following build(s):

fr-FR Cases

Brave | 1.58.135 Chromium: 117.0.5938.140 (Build officiel) (64 bits)
-- | --
Révision | 325e8592cad8c6badb656cab238b722ae46bf7bc
Système d'exploitation | Windows 10 Version 22H2 (Build 19045.3516)

Using the STR/Cases and information via #32416 (comment), ensured that the Brave News feed was available via NTP as per the following:

Example	Example	Example	Example	Example

de-DE Cases

Brave | 1.58.135 Chromium: 117.0.5938.140 (Offizieller Build) (64-Bit)
-- | --
Überarbeitung | 325e8592cad8c6badb656cab238b722ae46bf7bc
Betriebssystem | Windows 10 Version 22H2 (Build 19045.3516)

Using the STR/Cases and information via #32416 (comment), ensured that the Brave News feed was available via NTP as per the following:

Example	Example	Example	Example	Example