fix: always use pcall to check for treesitter parser

[ChristianHeinigk]

Description

When previewing a file, which does not have a treesitter parser, on nvim v0.11 an error is thrown. This change always uses pcall to try to add the treesitter parser for the detected filetype. Hence, the success and a message is returned and the previewer can gracefully just display the file's contents without highlighting.

Fixes #3314

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list relevant details about your configuration

• Preview any file for which no treesitter parser exist. I have specifically called into require"telescope.builtin".find_files{}

Configuration:

• Neovim version (nvim --version):

NVIM v0.11.0-dev-616+gfd65422b9
Build type: RelWithDebInfo
LuaJIT 2.1.1723675123
Run "nvim -V1 -v" for more info

• Operating system and version:

• OS Name: Microsoft Windows 11 Enterprise
• Version: 10.0.22631 Build 22631

Checklist:

• My code follows the style guidelines of this project (stylua)
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation (lua annotations)

[clason]

This is already fixed on master. Please make sure you have updated telescope. And your change actually removes that fix.

[clason]

NVIM v0.11.0-dev-616+gfd65422b9

That is a way too old commit. If you insist on using master, you have to keep updating to the latest commit.

[ChristianHeinigk]

Thanks for your quick reply! I can confirm it works with the latest nightly of neovim. For some reason, my update routine missed the neovim upgrade for some while...