Override map for enabling mainline module prebuilts

The release config maps in `v/g_sh/b/r/gms_mainline/required`
to enable mainline prebuilts of mandatory modules by
both internal google products and partner OEMs.

Addition of `v/g_sh/b/r/gms_mainline/optional` is product dependent, and
will have to be added separately

Bug: 342265627
Test: lunch cf_x86_64_phone-ap3a-userdebug
Test: verified that the following vars are same before and after change
Test: get_build_var RELEASE_APEX_CONTRIBUTIONS_ADBD # prebuilt
Test: get_build_var RELEASE_APEX_CONTRIBUTIONS_REMOTEKEYPROVISIONING #
prebuilt
Test: get_build_var RELEASE_APEX_CONTRIBUTIONS_UWB # prebuilt

Test: lunch cf_x86_64_wear-ap3a-userdebug && get_build_var
RELEASE_APEX_CONTRIBUTION_ADBD # empty string

Change-Id: Id7f0f97aa3ea11d4ab5b818349cb7905e3e79b29