[FIX] svg: allow path as root tag

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

@@ -52,6 +52,35 @@ exports[`properly support svg namespace to svg tags added even if already in svg
 }"
 `;
 
+exports[`properly support svg svg namespace added to sub templates if root tag is path 1`] = `
+"function anonymous(bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, component, comment } = bdom;
+  let { getTemplate } = helpers;
+  const callTemplate_1 = getTemplate(\`path\`);
+  
+  let block1 = createBlock(\`<svg block-ns=\\"http://www.w3.org/2000/svg\\"><block-child-0/></svg>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    let b2 = callTemplate_1.call(this, ctx, node, key + \`__1\`);
+    return block1([], [b2]);
+  }
+}"
+`;
+
+exports[`properly support svg svg namespace added to sub templates if root tag is path 2`] = `
+"function anonymous(bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, component, comment } = bdom;
+  
+  let block1 = createBlock(\`<path block-ns=\\"http://www.w3.org/2000/svg\\"/>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    return block1();
+  }
+}"
+`;
+
 exports[`properly support svg svg namespace added to sub-blocks 1`] = `
 "function anonymous(bdom, helpers
 ) {

tests/compiler/svg.test.ts

@@ -1,5 +1,7 @@
 import { renderToString, renderToBdom, snapshotEverything, makeTestFixture } from "../helpers";
 import { mount } from "../../src/blockdom";
+import { mount as mountComponent, Component } from "../../src/index";
+
 // NB: check the snapshots to see where the SVG namespaces are added
 snapshotEverything();
 
@@ -52,4 +54,24 @@ describe("properly support svg", () => {
       expect(el.namespaceURI).toBe("http://www.w3.org/2000/svg");
     }
   });
+
+  test("svg namespace added to sub templates if root tag is path", async () => {
+    const templates = `<t>
+      <t t-name="svg"><svg><t t-call="path" /></svg></t>
+      <t t-name="path"><path /></t>
+    </t>
+    `;
+    const fixture = makeTestFixture();
+
+    class Svg extends Component {
+      static template = "svg";
+    }
+
+    await mountComponent(Svg, fixture, { templates });
+    const elems = fixture.querySelectorAll("svg, path");
+    expect(elems.length).toEqual(2);
+    for (const el of elems) {
+      expect(el.namespaceURI).toBe("http://www.w3.org/2000/svg");
+    }
+  });
 });