feat(dev-infra): add phased review to groups requiring final sign-off after initial review (#37798)

The size-tracking, public-api, and circular-dependencies groups can get a lot of
PRs to review. In addition, the members of these groups do not always
have the necessary context to fully review the PR in question. This
change ensures that the owners in the groups where the changes are being
made have approve the changes (ie, the aren't pending or rejected)
before requesting final sign-off from these three critical groups.

PR Close #37798

.pullapprove.yml

@@ -1160,6 +1160,8 @@ groups:
   public-api:
     <<: *defaults
     conditions:
+      - *no-groups-above-this-pending
+      - *no-groups-above-this-rejected
       - *can-be-global-approved
       - >
         contains_any_globs(files, [
@@ -1190,6 +1192,8 @@ groups:
   size-tracking:
     <<: *defaults
     conditions:
+      - *no-groups-above-this-pending
+      - *no-groups-above-this-rejected
       - *can-be-global-approved
       - >
         contains_any_globs(files, [
@@ -1214,6 +1218,8 @@ groups:
   circular-dependencies:
     <<: *defaults
     conditions:
+      - *no-groups-above-this-pending
+      - *no-groups-above-this-rejected
       - *can-be-global-approved
       - >
         contains_any_globs(files, [