fix(bazelrc_lsp): invoke lsp subcommand explicitly (#3634)

The bazelrc-lsp binary added other sub-commands besides the `lsp`
functionality (e.g., `bazelrc-lsp format` can be used to format files
from the command line). This commit updates the config such that
the `bazelrc-lsp lsp` is explicitly invoked. (Currently, `bazelrc-lsp`
still defaults to the `lsp` sub-command, but this default will likely be
removed in a future version)

lua/lspconfig/configs/bazelrc_lsp.lua

@@ -2,7 +2,7 @@ local util = require 'lspconfig/util'
 
 return {
   default_config = {
-    cmd = { 'bazelrc-lsp' },
+    cmd = { 'bazelrc-lsp', 'lsp' },
     filetypes = { 'bazelrc' },
     root_dir = util.root_pattern('WORKSPACE', 'WORKSPACE.bazel', 'MODULE.bazel'),
   },