test(webapp): assert FROM-less SELECT is valid in the tsql linter

FROM is optional in the ClickHouse-derived grammar, so a query without
a FROM clause parses cleanly. Fix the stale expectation.

Author: kathiekiwi

apps/webapp/app/components/code/tsql/tsqlLinter.test.ts

@@ -68,9 +68,10 @@ describe("tsqlLinter", () => {
       expect(error).toContain("line");
     });
 
-    it("should handle missing FROM clause", () => {
-      const error = getTSQLError("SELECT * WHERE id = 1");
-      expect(error).not.toBeNull();
+    it("should accept a query without a FROM clause", () => {
+      // FROM is optional in the grammar (ClickHouse allows e.g. `SELECT 1`),
+      // so a FROM-less SELECT is syntactically valid.
+      expect(getTSQLError("SELECT * WHERE id = 1")).toBeNull();
     });
   });
 });