"Install all packages" doesn't recurse into files from `-r <file>` lines

[marjeta42]

Describe the bug "Install all packages" doesn't recurse into files from -r <file> lines

To Reproduce Steps to reproduce the behavior:

1. Create file requirements.txt with some requirements
2. Create file test.txt with -r ./requirements.txt
3. Inside test.txt right-click, and select "install all packages"
4. Nothing is installed

Expected behavior "Install all packages" should do the same as pip install -- recurse through all the files in -r <file> lines and install all those packages

IDE (please complete the following information. See Main Menu -> Help -> About):

• OS Mac OS X(x86_64) v12.3.1
• Product: PyCharm 2022.1 (Professional Edition) Build #PY-221.5080.212, built on April 12, 2022
• Version 11.0.14.1+1-b2043.25 x86_64
• JRE Version: VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
• Project SDK: Python 3.8.12 (also with 3.7 and 3.9)

PY-221.5080.212, JRE 11.0.14.1+1-b2043.25x64 JetBrains s.r.o.

Plugin (please complete the following information. See Main Menu -> File -> Settings -> Plugins):

• Version 2022.3-2022.1

[stdedos]

Also affects some warnings, like:

Package containing module 'xyz' is not listed in the project requirements

For a package referenced in a -r requirements-extra.txt, but not directly inside project's requirements.txt