SC2311 shouldn't appear with set -o posix

[ale5000-git]

For bugs

• Rule Id (if any, e.g. SC1000): SC2311
• My shellcheck version (shellcheck --version or "online"): online
• [x] The rule's wiki page does not already cover this (e.g. https://shellcheck.net/wiki/SC2086)
• [x] I tried on https://www.shellcheck.net/ and verified that this is still a problem on the latest commit

For new checks and feature suggestions

• [x] https://www.shellcheck.net/ (i.e. the latest commit) currently gives no useful warnings about this
• [x] I searched through https://github.com/koalaman/shellcheck/issues and didn't find anything related

Here's a snippet or screenshot that shows the problem:

#!/usr/bin/env bash
# shellcheck enable=all

set -e
set -o posix

test_func()
{
  :
}

_test="$(test_func)"

Here's what shellcheck currently says:

SC2311 (info): Bash implicitly disabled set -e for this function invocation because it's inside a command substitution. Add set -e; before it or enable inherit_errexit.

Here's what I wanted or expected to see:

set -o posix has the effect to also enable inherit_errexit, so SC2311 shouldn't appear