Should report error when config.toml is invalid

[TennyZhuang]

Describe the bug
config.toml parsing error is ignored even without a log.

The error produced here, without log

tabby/crates/tabby-common/src/config.rs

Lines 30 to 34 in f573527

	let cfg_path = crate::path::config_file();
	let mut cfg: Self = serdeconv::from_toml_file(cfg_path.as_path()).context(format!(
	"Config file '{}' is missing or not valid",
	cfg_path.display()
	))?;

And ignored here

tabby/crates/tabby/src/main.rs

Line 71 in f573527

let config = Config::load().unwrap_or_default();

When user provides an invalid config.toml (This is likely due to extreme lack of doc about the file), they can only see a default configuration applied without any information provided.

Information about your version

main

Information about your GPU
Please provide output of nvidia-smi

Additional context
Add any other context about the problem here.

[wsxiaoys]

Thanks for sharing the feedback, dup #2228