fix(builtins): suppress error when type -p sees no command

[reubeno]

While not described in #743, it's the next issue that neofetch seems to run into after getting the fix in #744.

Addresses inconsistency in whether type -p should emit anything to stdout or stderr when it can't find the specified command.

[github-actions]

Test Results

    3 files     23 suites   6m 51s ⏱️
1 113 tests 1 113 ✅ 0 💤 0 ❌
3 319 runs  3 319 ✅ 0 💤 0 ❌

Results for commit e198b74.

[github-actions]

Performance Benchmark Report

Benchmark name	Baseline (μs)	Test/PR (μs)	Delta (μs)	Delta %
clone_shell_object	17.51 μs	17.27 μs	-0.24 μs	🟢 -1.38%
eval_arithmetic	0.15 μs	0.15 μs	-0.00 μs	⚪ Unchanged
expand_one_string	1.97 μs	2.06 μs	0.09 μs	⚪ Unchanged
for_loop	22.00 μs	22.75 μs	0.75 μs	🟠 +3.42%
function_call	2.52 μs	3.14 μs	0.62 μs	🟠 +24.69%
instantiate_shell	58.13 μs	59.17 μs	1.03 μs	🟠 +1.78%
instantiate_shell_with_init_scripts	24419.63 μs	24753.44 μs	333.81 μs	⚪ Unchanged
parse_bash_completion	2049.86 μs	2044.17 μs	-5.68 μs	⚪ Unchanged
parse_sample_script	1.96 μs	2.01 μs	0.05 μs	🟠 +2.40%
run_echo_builtin_command	15.46 μs	16.29 μs	0.82 μs	⚪ Unchanged
run_one_external_command	2391.96 μs	2415.24 μs	23.28 μs	⚪ Unchanged
tokenize_sample_script	3.51 μs	3.52 μs	0.02 μs	⚪ Unchanged

Code Coverage Report: Only Changed Files listed

Package	Base Coverage	New Coverage	Difference
Overall Coverage	🟢 73.65%	🟢 73.65%	⚪ 0%

Minimum allowed coverage is 70%, this run produced 73.65%

Test Summary: bash-completion test suite

Outcome	Count	Percentage
✅ Pass	1348	63.92
❗️ Error	214	10.15
❌ Fail	178	8.44
⏩ Skip	354	16.79
❎ Expected Fail	14	0.66
✔️ Unexpected Pass	1	0.05
📊 Total	2109	100.00