Denylist f2fscrypt because it's failing to compile for the host.

Bug: 234340806
Test: bp2build.sh (CI)
Change-Id: Id437611f35a387949c664ff4385c464c12ce51f5
diff --git a/android/allowlists/allowlists.go b/android/allowlists/allowlists.go
index 11a6cd8..017f16d 100644
--- a/android/allowlists/allowlists.go
+++ b/android/allowlists/allowlists.go
@@ -322,6 +322,7 @@
 		"libdebuggerd", // TODO(b/228314770): support product variable-specific header_libs
 		"versioner",    // TODO(b/228313961):  depends on prebuilt shared library libclang-cpp_host as a shared library, which does not supply expected providers for a shared library
 		"f2fs.fibmap",  // ld.lld: error: undefined symbol: _IO
+		"f2fscrypt",    // TODO(b/234340806):  error: incompatible integer to pointer conversion initializing 'FILE *' (aka 'struct _IO_FILE *') with an expression of type 'int', and  error: incomplete definition of type 'struct mntent'
 
 		// java bugs
 		"libbase_ndk", // TODO(b/186826477): fails to link libctscamera2_jni for device (required for CtsCameraTestCases)