convert to base64 before export as CORS restrictions would break the export of linked images (#1003)

package-lock.json

@@ -17,7 +17,6 @@
         "browser-fs-access": "0.35.0",
         "core-js": "3.38.1",
         "elix": "15.0.1",
-        "html2canvas": "1.4.1",
         "i18next": "23.15.1",
         "jspdf": "2.5.1",
         "pathseg": "1.2.1",
@@ -5358,6 +5357,7 @@
     "node_modules/base64-arraybuffer": {
       "version": "1.0.2",
       "license": "MIT",
+      "optional": true,
       "engines": {
         "node": ">= 0.6.0"
       }
@@ -6593,6 +6593,7 @@
     "node_modules/css-line-break": {
       "version": "2.1.0",
       "license": "MIT",
+      "optional": true,
       "dependencies": {
         "utrie": "^1.0.2"
       }
@@ -9089,6 +9090,7 @@
     "node_modules/html2canvas": {
       "version": "1.4.1",
       "license": "MIT",
+      "optional": true,
       "dependencies": {
         "css-line-break": "^2.1.0",
         "text-segmentation": "^1.0.3"
@@ -16524,6 +16526,7 @@
     "node_modules/text-segmentation": {
       "version": "1.0.3",
       "license": "MIT",
+      "optional": true,
       "dependencies": {
         "utrie": "^1.0.2"
       }
@@ -17398,6 +17401,7 @@
     "node_modules/utrie": {
       "version": "1.0.2",
       "license": "MIT",
+      "optional": true,
       "dependencies": {
         "base64-arraybuffer": "^1.0.2"
       }