title: Using lib pragma after explicitly setting @INC has no effect
body: <pre><code>use feature qw(say);
  use strict;
  use warnings;
  BEGIN {
      @INC = qw(dir1 dir2); # &lt;-- lib pragma works fine if I omit this line
      # @INC = ();  &lt;-- this is what I wanted to do
      use lib 'dir3';
  }
  say for @INC;
  </code></pre>
  
  <p><strong>Output</strong>:</p>
  
  <pre><code>dir1
  dir2
  </code></pre>
  
  <p><strong>Expected output</strong>:</p>
  
  <pre><code>dir3
  dir1
  dir2
  </code></pre>