GH Workflows: Separate validateCompile step from validatePullRequest: (#300)

This will make the source of errors in steps clearer, without adding any extra pipeline time.

steps in github jobs are dependent on one another, so the build files can be passed onto prValidation without the need for PR validation to compile again

.github/workflows/build-test-prValidation.yml

@@ -59,6 +59,21 @@ jobs:
       - name: Enable jvm-opts
         run: cp .jvmopts-ci .jvmopts
 
+      - name: sbt validateCompile
+        run: |-
+          sbt \
+          -Dpekko.mima.enabled=false \
+          -Dpekko.test.multi-in-test=false \
+          -Dpekko.test.timefactor=2 \
+          -Dpekko.actor.testkit.typed.timefactor=2 \
+          -Dpekko.test.tags.exclude=gh-exclude,timing \
+          -Dpekko.cluster.assert=on \
+          -Dsbt.override.build.repos=false \
+          -Dpekko.test.multi-node=false \
+          -Dsbt.log.noformat=false \
+          -Dpekko.log.timestamps=true \
+          validateCompile
+
       - name: sbt validatePullRequest
         run: |-
           sbt \
@@ -72,4 +87,4 @@ jobs:
           -Dpekko.test.multi-node=false \
           -Dsbt.log.noformat=false \
           -Dpekko.log.timestamps=true \
-          validateCompile validatePullRequest
+          validatePullRequest