refactor: Unify Karma tsconfigs (#3296)

This pull request updates TypeScript configuration files related to
testing, mainly by centralizing the configuration of type definitions
for Karma tests. The main change is moving the specification of
test-related type definitions from individual package-level
`tsconfig.karma.json` files into the root `tsconfig.karma.json`,
simplifying and unifying the configuration across packages.

### Changes

**Centralization and simplification of test type definitions:**

* The root `tsconfig.karma.json` now includes all necessary test-related
type definitions (`jest`, `jest-extended`, and
`@streamr/test-utils/customMatcherTypes`) in its `types` array, ensuring
consistent type support for tests across all packages.
* The `display` field in the root `tsconfig.karma.json` was updated to
use a hyphen instead of an en dash for consistency.

**Cleanup of package-level configurations:**

* Removed the `types` arrays from the `tsconfig.karma.json` files in
`packages/dht`, `packages/proto-rpc`, `packages/trackerless-network`,
and `packages/utils`, as these are now inherited from the root config.
[[1]](diffhunk://#diff-ee756c159139fc121c7690550bbdedebbe93f791e29c68f80247e93b46a72287L4-R4)
[[2]](diffhunk://#diff-07b674f7bfb21f19369939a17a7a6ae2623d3b6de78fc89e1214d07764ef38c5L4-R4)
[[3]](diffhunk://#diff-5c2698258694c8934a41c50bf6374b3340732bfc80bd5eb9a407c89d8b46d0b7L4-R4)

**Other minor updates:**

* The root `tsconfig.karma.json` now only includes the latest ECMAScript
and DOM libraries in its `lib` array, removing older versions for
clarity and modernity[^1].

[^1]: `lib` field is cumulative – including `ESNext` (bleeding edge)
means we implicitly include all previous.

Author: mondoreale

packages/dht/tsconfig.karma.json

@@ -1,11 +1,7 @@
 {
   "extends": "../../tsconfig.karma.json",
   "compilerOptions": {
-    "outDir": "dist",
-    "types": [
-      "jest",
-      "jest-extended"
-    ]
+    "outDir": "dist"
   },
   "include": [
     "src",

packages/proto-rpc/tsconfig.karma.json

@@ -1,10 +1,7 @@
 {
   "extends": "../../tsconfig.karma.json",
   "compilerOptions": {
-    "outDir": "dist",
-    "types": [
-      "jest"
-    ]
+    "outDir": "dist"
   },
   "include": [
     "src"

packages/trackerless-network/tsconfig.karma.json

@@ -1,11 +1,7 @@
 {
   "extends": "../../tsconfig.karma.json",
   "compilerOptions": {
-    "outDir": "dist",
-    "types": [
-      "jest",
-      "@streamr/test-utils/customMatcherTypes"
-    ]
+    "outDir": "dist"
   },
   "include": [
     "src",

packages/utils/tsconfig.karma.json

@@ -1,11 +1,7 @@
 {
   "extends": "../../tsconfig.karma.json",
   "compilerOptions": {
-    "outDir": "dist",
-    "types": [
-      "jest",
-      "jest-extended"
-    ]
+    "outDir": "dist"
   },
   "include": [
     "src"

tsconfig.karma.json

@@ -1,20 +1,12 @@
 {
   "$schema": "https://json.schemastore.org/tsconfig",
-  "display": "Browser – Streamr",
+  "display": "Browser - Streamr",
   "compilerOptions": {
     "target": "ES2015",
     "module": "commonjs",
     "allowJs": true,
     "declaration": true,
     "lib": [
-      "ES5",
-      "ES2015",
-      "ES2016",
-      "ES2017",
-      "ES2018",
-      "ES2019",
-      "ES2020",
-      "ES2021",
       "ESNext",
       "DOM"
     ],
@@ -23,7 +15,11 @@
     "resolveJsonModule": true,
     "moduleResolution": "node",
     "isolatedModules": true,
-    "types": [],
+    "types": [
+      "jest",
+      "jest-extended",
+      "@streamr/test-utils/customMatcherTypes"
+    ],
     "sourceMap": true,
     "skipLibCheck": true,
     "forceConsistentCasingInFileNames": true,