Remove non-wrapping settings from the language configuration (#18412)

Closes https://github.com/zed-industries/zed/issues/17736

Those are limited with 1024 symbols before wrapping still, and were
introduced for git diff deleted hunks display.
Instead of confusing people with actually wrapping, restores behavior
that was before https://github.com/zed-industries/zed/pull/11080

Release Notes:

- Removed confusing soft wrap option behavior
([#17736]https://github.com/zed-industries/zed/issues/17736)

assets/settings/default.json

@@ -535,17 +535,16 @@
   // How to soft-wrap long lines of text.
   // Possible values:
   //
-  // 1. Do not soft wrap.
-  //      "soft_wrap": "none",
   // 2. Prefer a single line generally, unless an overly long line is encountered.
-  //      "soft_wrap": "prefer_line",
+  //      "soft_wrap": "none",
+  //      "soft_wrap": "prefer_line", // (deprecated, same as "none")
   // 3. Soft wrap lines that overflow the editor.
   //      "soft_wrap": "editor_width",
   // 4. Soft wrap lines at the preferred line length.
   //      "soft_wrap": "preferred_line_length",
   // 5. Soft wrap lines at the preferred line length or the editor width (whichever is smaller).
   //      "soft_wrap": "bounded",
-  "soft_wrap": "prefer_line",
+  "soft_wrap": "none",
   // The column at which to soft-wrap lines, for buffers where soft-wrap
   // is enabled.
   "preferred_line_length": 80,