chore: sign-in and register screens social sign in improvements

[saeedbashir]

Description

Jira Tickets:

LEARNER-10296
LEARNER-10297

Config:

https://github.com/edx/edx-mobile-config/pull/186

Screenshots

Axim Light	Axim Dark	edX Light	edx Dark

Note: I haven't implemented the more/less option for the social auth view. As at the moment, maximum 4 social auth options could be configured on mobile and more/less feature would be unused.
cc @moiz994

[rnr]

@saeedbashir @moiz994 Should Register screen says "Continue with"?

Before	After

[saeedbashir]

Hello @saeedbashir Are these design changes approved by Axim? @marcotuts @sdaitzman Thank you

@rnr Yes, here is the axim/schema figma file for the feature; we actually follow their design. And here is the edX design file.

[rnr]

LGTM! Thanks

[shafqat-muneer]

After adding the last social sign-in option, the screen's left and right margins became misaligned and need to be fixed.

Before Last Social Sign-in Option	After Last Social Sign-in Option

[shafqat-muneer]

Closure Parameter Position Violation: Closure parameters should be on the same line as opening brace (closure_parameter_position)

[shafqat-muneer]

Suggestion: Can we use .svg files here to prevent blurriness on high-resolution screens, even though no issues have been observed so far?

[saeedbashir]

We are using high-resolution images, so it's not needed.

[shafqat-muneer]

LGTM 👍

After Last Social Sign-in Option