fmt: recognize or blocks in call args

[ttytm]

This PR should fix un-uniform behavior where or-blocks are not recognized in call arguments.

Current:

import os

const (
	// v fmt doesn't alling since it isn't singleline / has an or block.
	exe = os.find_abs_path_of_executable('my_exe') or {
		eprintln('skipping test, since `my_exe` is missing')
		exit(0)
	}
	// same expr as above but wrapped in a function as an argument.
	// v fmt aligns despite the or block.
	exe_quoted            = os.quoted_path(os.find_abs_path_of_executable('my_exe') or {
		eprintln('skipping test, since `my_exe` is missing')
		exit(0)
	})
	single_line_test_path = os.join_path(os.vtmp_dir(), 'my_test_path')
)

Changed:

import os

const (
	exe = os.find_abs_path_of_executable('my_exe') or {
		eprintln('skipping test, since `my_exe` is missing')
		exit(0)
	}
	// Now detects or block in call arg.
	exe_quoted = os.quoted_path(os.find_abs_path_of_executable('my_exe') or {
		eprintln('skipping test, since `my_exe` is missing')
		exit(0)
	})
	single_line_test_path = os.join_path(os.vtmp_dir(), 'my_test_path')
)

🤖 Generated by Copilot at 08b020b

Improve the formatting of call expressions with or blocks and add a test file to verify it. Fix issue #11197 by modifying expr_is_single_line in vlib/v/fmt/fmt.v.

🤖 Generated by Copilot at 08b020b

• Fix formatting of call expressions with or blocks (link)
• Add test cases for formatting of call expressions with or blocks as constants (link)

[spytheman]

Excellent.