Fixes failure to open matrix configuration dialog for Test Lab test.

Fixes message key mismatch that caused a NullPointerException while
openning a matrix configuration dialog.

Fixes b/74440683

Test: Manual
Change-Id: Ib363f045d5bad18df8c47b043a1eee36af1c8bfb
(cherry picked from commit 818f1180f4a90e48d3a4d097ebe916ec9635ae65)
1 file changed
tree: 7d687393817804e794328315b40fefe36a0afd31
  1. firebase-testing/
  2. test-recorder/