Use the rule type as a prefix for the DNR database table

https://bugs.webkit.org/show_bug.cgi?id=270911
rdar://121455049

Reviewed by Timothy Hatcher.

This matches the current database format in Safari, and having these formats match will help us migrate existing extension data
over to WebKit's new file structure.

While we're here, we are changing the name of the database file on disk. Without this, we would need to bump the schema version, which
would lead to issues when performing the previously described migration.

* Source/WebKit/UIProcess/Extensions/Cocoa/_WKWebExtensionDeclarativeNetRequestSQLiteStore.mm:
(-[_WKWebExtensionDeclarativeNetRequestSQLiteStore initWithUniqueIdentifier:storageType:directory:usesInMemoryDatabase:]):

Canonical link: https://commits.webkit.org/276033@main

Source/WebKit/UIProcess/Extensions/Cocoa/_WKWebExtensionDeclarativeNetRequestSQLiteStore.mm

@@ -54,7 +54,7 @@ - (instancetype)initWithUniqueIdentifier:(NSString *)uniqueIdentifier storageTyp
         return nil;
 
     _storageType = storageType == _WKWebExtensionDeclarativeNetRequestStorageType::Dynamic ? @"dynamic" : @"session";
-    _tableName = @"rules";
+    _tableName = [NSString stringWithFormat:@"%@_rules", _storageType];
     return self;
 }
 
@@ -264,7 +264,7 @@ - (NSURL *)_databaseURL
 
     ASSERT([_storageType isEqualToString:@"dynamic"]);
 
-    NSString *databaseName = @"DeclarativeNetRequestDynamicRules.db";
+    NSString *databaseName = @"DeclarativeNetRequestRules.db";
     return [_directory URLByAppendingPathComponent:databaseName isDirectory:NO];
 }