Fix missing required dependency caused by circular dependency

Fix a bug where if module A requires module B, and for whatever reason
module A and B have some common installed files, then all required
dependencies of the common files would be lost.

For example:
```
 # A requires B
ALL_MODULES.A.INSTALLED := a
ALL_MODULES.B.INSTALLED := a b
```

Right now the build system wouldn't generate any dependency for `a`.
However the correct behavior should be: `a` has a order-only dependency
on `b`.

Bug: 157444528
Test: Check generated build-*.ninja
Change-Id: Iec60231f6597ec46077393d1defa109b9c07b208