Container fix

[niden]

Hello!

• Type: bug fix
• Link to issue:

In raising this pull request, I confirm the following:

• I have read and understood the Contributing Guidelines
• I have checked that another pull request for this purpose does not exist
• I wrote some tests for this PR
• I have updated the relevant CHANGELOG
• I have created a PR for the documentation about this change

Fixed Phalcon\Container:get to use getShared transparently

Thanks

[codecov]

Codecov Report

Merging #14502 into 4.0.x will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##            4.0.x   #14502   +/-   ##
=======================================
  Coverage    67.7%    67.7%           
=======================================
  Files         482      482           
  Lines      111388   111388           
=======================================
  Hits        75418    75418           
  Misses      35970    35970