Start validating signatures of androidx.compose.compiler

This is still a no-op until we move away from using project dependency
of androidx.compose.compiler

Test: ./gradlew compose:runtime:runtime:assembleDebug -> still works, no
      change
Change-Id: I3a2cce9614d15d81d498c3bacdb305e9955495d6
diff --git a/gradle/verification-metadata.xml b/gradle/verification-metadata.xml
index 7fc0903..2ae8411 100644
--- a/gradle/verification-metadata.xml
+++ b/gradle/verification-metadata.xml
@@ -22,7 +22,7 @@
          <trust group="gradle" name="gradle"/>
          <trust file=".*-javadoc[.]jar" regex="true"/>
          <trust file=".*-sources[.]jar" regex="true"/>
-         <trust group="^androidx($|([.].*))" regex="true" reason="not signed yet"/>
+         <trust group="^androidx(?!\.compose.compiler\b)\..*" regex="true" reason="not signed yet"/>
          <trust group="^com[.]android($|([.].*))" regex="true" reason="b/215430394"/>
       </trusted-artifacts>
       <trusted-keys>
@@ -277,7 +277,7 @@
          <trusted-key id="82F833963889D7ED06F1E4DC6525FD70CC303655" group="org.codehaus.mojo"/>
          <trusted-key id="835A685C8C6F49C54980E5CAF406F31BC1468EBA" group="org.jcodec"/>
          <trusted-key id="842AFB86375D805422835BFD82B5574242C20D6F" group="org.antlr"/>
-         <trusted-key id="8461EFA0E74ABAE010DE66994EB27DB2A3B88B8B" group="^androidx[.]test($|([.].*))" regex="true"/>
+         <trusted-key id="8461EFA0E74ABAE010DE66994EB27DB2A3B88B8B" group="^androidx\..*" regex="true"/>
          <trusted-key id="84789D24DF77A32433CE1F079EB80E92EB2135B1">
             <trusting group="org.apache"/>
             <trusting group="org.apache.maven" name="maven-parent"/>