Enable first run dialog on Windows

[simonhong]

First run dialog is launched on macOS and linux (see #12679)
We want to launch it on Windows also.

[MadhaviSeelam]

Brave	1.38.71 Chromium: 100.0.4896.46 (Official Build) beta (64-bit)
Revision	5ca33821b2211805855c77d334353d27c616a7ca-refs/branch-heads/4896@{#584}
OS	Windows 11 Version 21H2 (Build 22000.556)

Clean Install 1.38.x
Launch Brave
Verified FirstRun dialog is displayed

Note: There was a design change so dialog design will not match to mockup in this story. There is a follow up and tested UI and functionality as part of #21694

[kjozwiak]

We'll need to re-test this via 1.37.x as we're uplifting it into the 1.37.x maintenance release via brave/brave-core#12692. The above will require 1.37.111 or higher for verification using 1.37.x.

[GeetaSarvadnya]

Verification PASSED on

Brave | 1.37.113 Chromium: 100.0.4896.88 (Official Build) (64-bit)
-- | --
Revision | 4450653bfa91182e85723d8f1dee64dd6ce40ed4-refs/branch-heads/4896@{#1086}
OS | Windows 10 Version 21H2 (Build 19044.1586)

Clean profile

• Confirmed first run dialog is shown when brave is launched in a clean install
• Confirmed that the dialog content is as per the design mockup mentioned in Follow up to first run dialog on Windows #21694 (comment)

OS light theme	OS dark theme

• Confirmed click on Set Brave as default button in first-run dialog set the brave as the default browser and Make Default is removed from the brave://settings/getStarted
• Confirmed click on the Maybe later button in the first-run dialog doesn't set the brave as the default browser and the Make Default option is shown in the brave://settings/getStarted
• Confirmed that the user can set the brave as default browser by clicking on the Make Default option is shown in the brave://settings/getStarted
• Order of the buttons is not as per the mockup (@MadhaviSeelam will file an issue for it Make Default button is not displayed in brave://settings #21954 (comment))
• Confirmed that clicking on x closes the first-run dialog

Upgrade profile

• Installed 1.37.111 and upgrade the profile to 137.113 and confirmed first run dialog is NOT shown in an upgraded profile
• Installed 1.37.111 and set the brave as a default browser and upgrade the profile to 137.113 and confirmed first run dialog is NOT shown in an upgraded profile and Make Default is removed from the brave://settings/getStarted