Revert "python3Packages.bokeh: 2.4.3 -> 3.0.3"

This reverts commit 1ac65c004e.

Reverse dependencies are not ready yet, breaks panel and multiple other
packages.

pkgs/development/python-modules/bokeh/hardcode-nodejs-npmjs-paths.patch

@@ -1,9 +1,9 @@
-diff --git a/src/bokeh/util/compiler.py b/src/bokeh/util/compiler.py
-index 9af8691..4b93543 100644
---- a/src/bokeh/util/compiler.py
-+++ b/src/bokeh/util/compiler.py
-@@ -415,8 +415,8 @@ def _detect_nodejs() -> str:
-     raise RuntimeError(f'node.js v{version_repr} or higher is needed to allow compilation of custom models ' +
+diff --git a/bokeh/util/compiler.py b/bokeh/util/compiler.py
+index a752aad7d..8af05ff63 100644
+--- a/bokeh/util/compiler.py
++++ b/bokeh/util/compiler.py
+@@ -442,8 +442,8 @@ def _detect_nodejs():
+     raise RuntimeError('node.js v%s or higher is needed to allow compilation of custom models ' % version +
                         '("conda install nodejs" or follow https://nodejs.org/en/download/)')
  
 -_nodejs = None
@@ -11,5 +11,5 @@ index 9af8691..4b93543 100644
 +_nodejs = "@node_bin@"
 +_npmjs = "@npm_bin@"
  
- def _nodejs_path() -> str:
+ def _nodejs_path():
      global _nodejs