readFile that is not C2PA shouldn't throw a runtime exception

[n8fr8]

FATAL EXCEPTION:
Process: org.witness.proofmode, PID: 11883
java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:576)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:929)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:566)
... 1 more
Caused by: C2PA-API error: ManifestNotFound: no JUMBF data found
at org.contentauth.c2pa.C2PA.readFile(r8-map-id-17b7e10710c6804a356ae79e7b24b60805eec5fe58c68316f8b026223d47280c:3)
at org.witness.proofmode.c2pa.C2PAManager.validateSignedMedia(C2PAManager.kt:709)

[n8fr8]

throw a C2PAException perhaps?

[n8fr8]

I guess this does work to catch the exception when there is no C2PA present:

try {
val c2paMan = C2PAManager(context, PreferencesManager(context))
valid = c2paMan.validateSignedMedia(c2paFile.canonicalPath)
} catch (e: Exception) {
false
}