update tslib, set import-helpers: false  [helix-front] (#2166)

Ensure that consumers of helix-front do not themselves need tslib as a direct dependency.
diff --git a/helix-front/cypress/tsconfig.json b/helix-front/cypress/tsconfig.json
index 72d96bc..56fc20a 100644
--- a/helix-front/cypress/tsconfig.json
+++ b/helix-front/cypress/tsconfig.json
@@ -2,7 +2,7 @@
   "include": ["**/*.cy.ts"],
   "compileOnSave": false,
   "compilerOptions": {
-    "importHelpers": true,
+    "importHelpers": false,
     "sourceMap": false,
     "declaration": false,
     "moduleResolution": "node",
diff --git a/helix-front/package.json b/helix-front/package.json
index 45302ea..1d1723e 100644
--- a/helix-front/package.json
+++ b/helix-front/package.json
@@ -81,7 +81,7 @@
     "rxjs-compat": "^6.0.0-rc.0",
     "sass": "^1.51.0",
     "timsort": "^0.3.0",
-    "tslib": "^2.0.0",
+    "tslib": "^2.4.0",
     "uuid": "^7.0.3",
     "vis-data": "^6.5.1",
     "vis-network": "7.10.2",
diff --git a/helix-front/tsconfig.json b/helix-front/tsconfig.json
index d2bb08f..645bc91 100644
--- a/helix-front/tsconfig.json
+++ b/helix-front/tsconfig.json
@@ -2,7 +2,7 @@
   "compileOnSave": false,
   "exclude": ["**/*.cy.ts", "**/*.spec.ts"],
   "compilerOptions": {
-    "importHelpers": true,
+    "importHelpers": false,
     "outDir": "./dist/out-tsc",
     "baseUrl": "client",
     "sourceMap": true,
diff --git a/helix-front/yarn.lock b/helix-front/yarn.lock
index 9531243..54eccf5 100644
--- a/helix-front/yarn.lock
+++ b/helix-front/yarn.lock
@@ -10505,7 +10505,7 @@
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.14.1.tgz#cf2d38bdc34a134bcaf1091c41f6619e2f672d00"
   integrity sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg==
 
-tslib@^2.0.0, tslib@^2.1.0, tslib@^2.3.0:
+tslib@^2.0.0, tslib@^2.1.0, tslib@^2.3.0, tslib@^2.4.0:
   version "2.4.0"
   resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.4.0.tgz#7cecaa7f073ce680a05847aa77be941098f36dc3"
   integrity sha512-d6xOpEDfsi2CZVlPQzGeux8XMwLT9hssAsaPYExaQMuYskwb+x1x7J371tWlbBdWHroy99KnVB6qIkUbs5X3UQ==