Adjust workflow names to make them more clear

This makes the names shown in the GitHub UI a bit easier to figure out.

Author: mhucka

.github/workflows/ci-nightly-build-test.yaml

@@ -14,7 +14,7 @@
 # https://github.com/tensorflow/quantum/actions/workflows/ci-build-checks.yaml
 # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-name: CI nightly test
+name: CI nightly full test
 run-name: Continuous integration nightly build & test
 
 on:

.github/workflows/ci-nightly-cirq-test.yaml

@@ -9,7 +9,7 @@
 # options for overridding some of the parameters for the run.
 # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-name: CI nightly Cirq test
+name: CI nightly Cirq compatibility test
 run-name: Continuous integration Cirq compatibility test
 
 on: