fix: Minor bugs in default config due to missing feature flags

[HamzaIsrar12]

Description

LEARNER-9732

Resolve the following issues in this PR:

• Fix the API version problem on the register screen
• Manage the "My Courses" screen title when programs are absent
• Address the functionality of the "View all dates" button on sync dates when the dates tab is absent
• Remove unused code from the config

[codecov[bot]]

Codecov Report

Attention: 21 lines in your changes are missing coverage. Please review.

Comparison is base (0749897) 1.07% compared to head (ee4f6ff) 1.07%.

Files	Patch %	Lines
...src/main/java/org/edx/mobile/view/LearnFragment.kt	0.00%	14 Missing :warning:
...bile/src/main/java/org/edx/mobile/util/Config.java	0.00%	4 Missing :warning:
...org/edx/mobile/view/CourseTabsDashboardFragment.kt	0.00%	3 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1842 +/- ## ======================================== Coverage 1.07% 1.07% Complexity 137 137 ======================================== Files 538 538 Lines 26314 26312 -2 Branches 3391 3390 -1 ======================================== Hits 284 284 + Misses 26003 26001 -2 Partials 27 27 ```

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