[FIX] t-out: allow expressions evaluating as number

tests/compiler/__snapshots__/t_out.test.ts.snap

@@ -79,6 +79,21 @@ exports[`t-out not escaping 1`] = `
 }"
 `;
 
+exports[`t-out number literal 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, component, comment } = bdom;
+  let { safeOutput } = helpers;
+  
+  let block1 = createBlock(\`<span><block-child-0/></span>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    const b2 = safeOutput(1);
+    return block1([], [b2]);
+  }
+}"
+`;
+
 exports[`t-out t-out 0 1`] = `
 "function anonymous(app, bdom, helpers
 ) {

tests/compiler/t_out.test.ts

@@ -27,6 +27,11 @@ describe("t-out", () => {
     expect(renderToString(template)).toBe("<span>ok</span>");
   });
 
+  test("number literal", () => {
+    const template = `<span><t t-out="1"/></span>`;
+    expect(renderToString(template)).toBe("<span>1</span>");
+  });
+
   test("literal, no outside html element", () => {
     const template = `<t t-out="'ok'"/>`;
     expect(renderToString(template)).toBe("ok");