Replace @matejmazur/react-katex with own katex component (#2381)

* Replace @matejmazur/react-katex with self-made katex component

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

yarn.lock

@@ -1946,7 +1946,6 @@ __metadata:
     "@hedgedoc/markdown-it-task-lists": 1.0.5
     "@hedgedoc/realtime": 0.3.0
     "@hpcc-js/wasm": 1.16.1
-    "@matejmazur/react-katex": 3.1.3
     "@mrdrogdrog/optional": 0.2.0
     "@next/bundle-analyzer": 12.3.1
     "@react-hook/resize-observer": 1.2.6
@@ -1963,6 +1962,7 @@ __metadata:
     "@types/dompurify": 2.3.4
     "@types/jest": 29.0.3
     "@types/js-yaml": 4.0.5
+    "@types/katex": 0.14.0
     "@types/luxon": 3.0.1
     "@types/markdown-it": 12.2.3
     "@types/markdown-it-container": 2.0.5
@@ -2582,16 +2582,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@matejmazur/react-katex@npm:3.1.3":
-  version: 3.1.3
-  resolution: "@matejmazur/react-katex@npm:3.1.3"
-  peerDependencies:
-    katex: ">=0.9"
-    react: ">=16"
-  checksum: db9e9aa03d3b094fcb9854abeab3676732b04dbe4fbfe2dbf26782a6d50c197351d06ad833c78b90f7e418d769b77c30460a60906e80e800d84e16c938f3d6d1
-  languageName: node
-  linkType: hard
-
 "@mrdrogdrog/optional@npm:0.2.0":
   version: 0.2.0
   resolution: "@mrdrogdrog/optional@npm:0.2.0"
@@ -3428,6 +3418,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/katex@npm:0.14.0":
+  version: 0.14.0
+  resolution: "@types/katex@npm:0.14.0"
+  checksum: 330e0d0337ba48c87f5b793965fbad673653789bf6e50dfe8d726a7b0cbefd37195055e31503aae629814aa79447e4f23a4b87ad1ac565c0d9a9d9978836f39b
+  languageName: node
+  linkType: hard
+
 "@types/linkify-it@npm:*":
   version: 3.0.2
   resolution: "@types/linkify-it@npm:3.0.2"