Fix expectation for query larger unit spector tests (#9636)

Query param values are always evaluated as strings in the test harness.

Author: JoshLove-msft

.chronus/changes/query-larger-unit-string-2026-1-8-11-25-37.md

@@ -0,0 +1,7 @@
+---
+changeKind: fix
+packages:
+  - "@typespec/http-specs"
+---
+
+Fix expectation for query larger unit tests

packages/http-specs/specs/encode/duration/mockapi.ts

@@ -231,7 +231,7 @@ Scenarios.Encode_Duration_Query_floatSecondsLargerUnit = createQueryServerTests(
   {
     input: 150,
   },
-  150,
+  "150",
 );
 Scenarios.Encode_Duration_Query_int32MillisecondsLargerUnit = createQueryServerTests(
   "/encode/duration/query/int32-milliseconds-larger-unit",
@@ -245,7 +245,7 @@ Scenarios.Encode_Duration_Query_floatMillisecondsLargerUnit = createQueryServerT
   {
     input: 210000,
   },
-  210000,
+  "210000",
 );
 
 function createHeaderServerTests(uri: string, headersData: any, value: any) {