software/theia: prepend our PATH entries before gowork's

gowork include gcc's location, which can be /usr/bin when system gcc was
selected.

software/theia/software.cfg

@@ -328,8 +328,8 @@ mode = 0777
 template =
   inline:
   #!/bin/bash
-  export PATH=${python-language-server:location}/bin/:${cli-utilities:PATH}:$PATH
   . ${gowork:env.sh}
+  export PATH=${python-language-server:location}/bin/:${cli-utilities:PATH}:$PATH
   export THEIA_DEFAULT_PLUGINS="local-dir:${theia:THEIA_DEFAULT_PLUGINS}"
   # reset PS1 from gowork
   export PS1='$ '