Revert "Temp. disable `libnativeloader_e2e_tests` in Mainline Presubmits."

This reverts commit 2de36b3f2f2f09e5ba9562de4db6d2439f76298b.

Reason for revert: Original change superseded by cl/490093043.

Test: Rely on Treehugger's Mainline Presubmit test runs
Bug: 259700260
Change-Id: I1cf5ea16bfe1c9a98ed50dfa7a9fb67392c3eb5d
2 files changed