enable and fix no-unused-vars and no-async-promise-executor (#17070)

* dev: set --no-bail for lint task

* lint: enable no-async-promise-executor lint and fix them

* lint: enable no-unused-vars with allowing _ prefix

* lint: fix semi

packages/backend/src/misc/check-word-mute.ts

@@ -56,7 +56,7 @@ export async function checkWordMute(note: NoteLike, me: UserLike | null | undefi
 
 				try {
 					return new RE2(regexp[1], regexp[2]).test(text);
-				} catch (err) {
+				} catch (_) {
 					// This should never happen due to input sanitisation.
 					return false;
 				}

packages/backend/src/misc/get-ip-hash.ts

@@ -12,7 +12,7 @@ export function getIpHash(ip: string): string {
 		// (this means for IPv4 the entire address is used)
 		const prefix = IPCIDR.createAddress(ip).mask(64);
 		return 'ip-' + BigInt('0b' + prefix).toString(36);
-	} catch (e) {
+	} catch (_) {
 		const prefix = IPCIDR.createAddress(ip.replace(/:[0-9]+$/, '')).mask(64);
 		return 'ip-' + BigInt('0b' + prefix).toString(36);
 	}

packages/backend/src/misc/i18n.ts

@@ -26,7 +26,7 @@ export class I18n<T extends Record<string, any>> {
 				}
 			}
 			return str;
-		} catch (e) {
+		} catch (_) {
 			console.warn(`missing localization '${key}'`);
 			return key;
 		}

packages/backend/src/misc/json-schema.ts

@@ -262,8 +262,6 @@ type ObjectSchemaTypeDef<p extends Schema> =
 				never :
 			any;
 
-type ObjectSchemaType<p extends Schema> = NullOrUndefined<p, ObjectSchemaTypeDef<p>>;
-
 export type SchemaTypeDef<p extends Schema> =
 	p['type'] extends 'null' ? null :
 	p['type'] extends 'integer' ? number :