fma: use header_jar_override

We know that framework-minus-apex-headers contains the correct turbine
output for framework-minus-apex.  Use that instead of re-running turbine
to get the same output.

Bug: 396137333
Test: Manual, TH
Flag: build.RELEASE_JAVA_HEADER_JAR_OVERRIDE
Change-Id: I64856eee3598c34faafe22ca8536074723369c7a