Perform a non strict matching of .dm files when computing the size

'adb shell pm install' creates the PackageLite structure without
validating or renaming the input files to '.apk'.

Be more permissive in DexMetadataHeler when computing the size of the
package to allow for this scenario.

Test: atest
core/tests/coretests/src/android/content/pm/dex/DexMetadataHelperTest.java
Bug: 72267410

Change-Id: Ica446b0822be71826d02d01ada015a43d8133c68