Unable to configure keyboard shortcuts using the .vimrc file

Describe the bug
Unable to configure keyboard shortcuts using the .vimrc file.

To Reproduce
I'm trying to configure my VsCodeVim using a .vimrc file. I've written the following content in the file:
inoremap
inoremap
inoremap
inoremap
The goal is to allow me to move the cursor directly in insert mode using the Alt+hjkl key combinations without having to switch back to normal mode. These configurations work fine in gVim 9.1, but they don't work in VsCode. I've already disabled the Alt key shortcuts for the menu bar mapping through the following two settings:
Window: Custom Menu Bar Alt Focus
Window: Enable Menu Bar Mnemonics

Expected behavior
Move the cursor directly in insert mode using the Alt+hjkl key combinations without having to switch back to normal mode.

Screenshots
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Environment (please complete the following information):

• Extension (VsCodeVim) version: v1.32.1
• VSCode version: 1.106.0
• OS: Windows 11 25H2 26200.7171

Additional context
Changing M-x to A-x also didn't work. However, changing it to C-x allows me to use the Ctrl+hjkl key combinations to move the cursor in insert mode normally.

Reproduce the issue with the provided .vimrc mappings on Windows 11 using VSCodeVim v1.32.1 and VS Code 1.106.0, comparing Alt, Ctrl, and A-x/C-x mappings. Start by tracing how insert-mode mappings and Alt key events are handled; done means Alt+hjkl moves the cursor in insert mode without conflicting with the menu bar.