perf(lua): faster vim.deprecate() #28470

Problem: `vim.deprecate()` can be relatively significantly slower than
  the deprecated function in "Nvim" plugin.
Solution: Optimize checks for "Nvim" plugin. This also results into not
  distinguishing "xxx-dev" and "xxx" versions when doing checks, which
  is essentially covered by the deprecation logic itself.

With this rewrite I get the times from #28459: `{ 0.024827, 0.003797, 0.002024, 0.001774, 0.001703 }`.
For quicker reference:
    -  On current Nightly it is something like `{ 3.72243, 0.918169, 0.968143, 0.763256, 0.783424 }`.
    - On 0.9.5: `{ 0.002955, 0.000361, 0.000281, 0.000251, 0.00019 }`.

test/functional/lua/vim_spec.lua

@@ -147,8 +147,10 @@ describe('lua stdlib', function()
       end)
 
       it('when plugin = nil', function()
+        local cur = vim.version.parse(current_version)
+        local cur_to_compare = cur.major .. '.' .. cur.minor
         local was_removed = (
-          vim.version.ge(current_version, '0.10') and 'was removed' or 'will be removed'
+          vim.version.ge(cur_to_compare, '0.10') and 'was removed' or 'will be removed'
         )
         eq(
           dedent([[