[cm6] Highlight the active visible line (#10441)

* Remove background opacity from selection
* Remove highlightActiveLine and highlightActiveLineGutter extensions
* Add new highlightActiveLine extension
* Adjust zIndex for layers
* Ensure the output file ends with a newline
* Update themes
* Remove the active line highlight when text is selected
* Disable emptyLineFiller temporarily

GitOrigin-RevId: a3228d3441ee2eac136768c3d0788ec471559cd9

package-lock.json

@@ -13161,15 +13161,6 @@
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@@ -38774,8 +38756,6 @@
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@@ -48720,8 +48700,6 @@
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         "content-disposition": "^0.5.0",
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@@ -54611,15 +54589,6 @@
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@@ -54633,15 +54602,6 @@
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-      "dev": true,
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services/web/package.json

@@ -272,8 +272,6 @@
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     "content-disposition": "^0.5.0",
     "copy-webpack-plugin": "^10.2.4",
     "css-loader": "^6.7.1",