fix jest

- templated_args was missing --node_modules= prefix, and was causing
tests to pass unconditionally
- update to beta of jest 27, which introduces an option to fix the
symlink handling, and is approx twice as fast to start up

ts/html-filter/BUILD.bazel

@@ -40,10 +40,6 @@ jest_test(
         "//ts:jest.config.js",
         "//ts:package.json",
     ],
-    templated_args = [
-        "-preserve-symlinks",
-        "--preserve-symlinks-main",
-    ],
 )
 
 # Tests

ts/jest.config.js

@@ -0,0 +1,3 @@
+module.exports = {
+    haste: { forceNodeFilesystemAPI: true },
+};

ts/package.json

@@ -33,7 +33,7 @@
         "espree": "^7.3.1",
         "estraverse": "^5.2.0",
         "glob": "^7.1.6",
-        "jest-cli": "^26.6.3",
+        "jest-cli": "^27.0.0-next.7",
         "jsdoc": "^3.6.6",
         "license-checker-rseidelsohn": "=1.1.2",
         "minimist": "^1.2.5",