Skip any erroring entry in FilesystemStore::list

Previously, we would bubble up any error that we'd encouter during
retrieving the metadata for all listed entries. Here we relax this
somewhat to allow for minor inconsistencies between reading the
directory entries and checking whether they are valid key entries.

Author: tnull

lightning-persister/src/fs_store.rs

@@ -316,7 +316,9 @@ impl KVStore for FilesystemStore {
 			let entry = entry?;
 			let p = entry.path();
 
-			if !dir_entry_is_key(&p)? {
+			// We skip any entries that do not adhere to our key requirements, or for which we get
+			// an error.
+			if !dir_entry_is_key(&p).unwrap_or(false) {
 				continue;
 			}