fix(attestation): restore presence-based findBoolean for KeyMint tags

KeyMint boolean tags (NO_AUTH_REQUIRED, CALLER_NONCE, etc.) use
presence-based semantics: tag exists = true, tag absent = null.
The .value?.boolValue approach fails on some AIDL implementations
where the boolValue field isn't populated despite the tag being
present, silently dropping boolean tags from attestations.

app/src/main/java/org/matrix/TEESimulator/attestation/KeyMintAttestation.kt

@@ -157,7 +157,7 @@ data class KeyMintAttestation(
 
 /** Maps to AOSP field = Integer */
 private fun Array<KeyParameter>.findBoolean(tag: Int): Boolean? =
-    this.find { it.tag == tag }?.value?.boolValue
+    if (this.any { it.tag == tag }) true else null
 
 /** Maps to AOSP field = Integer */
 private fun Array<KeyParameter>.findInteger(tag: Int): Int? =