selectrum: improve company advice

- try `basic` and `partial-completion` completion styles before
  `orderless`, since `company-mode` is usually used in in-buffer
  completions where these often give much more relevant results than
  orderless, which can still be accessed by `&`.

modules/completion/selectrum/TODO.org

@@ -119,7 +119,6 @@ The clicking links exported grep buffers used to open in a new window, but now
 *** TODO Open upstream Embark issue for ~bookmark~ and ~file~
 ~bookmark~ or ~file~ export buffers open the links in the same window rather than
 the other one. This can be reproduces on emacs -Q.
-** TODO ~company~ completions get ordered really weirdly
 This is due to orderless adding a bunch of other matches.
 
 * PROJ Review non-blocking Issues

modules/completion/selectrum/autoload/selectrum.el

@@ -2,10 +2,11 @@
 
 ;;;###autoload
 (defadvice! +selectrum--company-capf--candidates-a (fn &rest args)
-  "Function to help company to highlight all candidates with just
-one face."
+  "Highlight company matches correctly, and try default completion styles before
+orderless."
   :around 'company-capf--candidates
-  (let ((orderless-match-faces [completions-common-part]))
+  (let ((orderless-match-faces [completions-common-part])
+        (completion-styles '(basic partial-completion orderless)))
     (apply fn args)))
 
 ;;;###autoload