fix(core): fix inverted boolean condition in warning message

[GuillaumeLagrange]

No description provided.

[codspeed-hq]

CodSpeed Performance Report

Merging #158 will degrade performance by 88.89%

_{Comparing fix-no-instrumentation-message (736cc1b) with main (3731cf2)}

Summary

⚡ 6 improvements
❌ 9 regressions
✅ 560 untouched

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Mode	Benchmark	BASE	HEAD	Efficiency
⚡	WallTime	hamiltonian_cycle[7]	1.8 µs	1 µs	+81.68%
❌	WallTime	add_two_integers[(42, 13)]	20 ns	21 ns	-4.76%
⚡	WallTime	slice_into_vec_with_bytes	60 ns	58 ns	+3.45%
⚡	WallTime	graph_coloring[6]	1.3 µs	1.1 µs	+11.42%
⚡	WallTime	hamiltonian_cycle[5]	938 ns	908 ns	+3.3%
⚡	WallTime	hamiltonian_cycle[4]	1,307 ns	728 ns	+79.53%
⚡	WallTime	hamiltonian_cycle[6]	1,487 ns	902 ns	+64.86%
❌	Simulation	find_highest_set_bit[1024]	122.2 ns	151.4 ns	-19.27%
❌	Simulation	find_highest_set_bit[42]	122.2 ns	151.4 ns	-19.27%
❌	Simulation	find_highest_set_bit[255]	122.2 ns	151.4 ns	-19.27%
❌	Simulation	find_highest_set_bit[65535]	122.2 ns	151.4 ns	-19.27%
❌	Simulation	process_items_with_counter	806.7 ns	835.8 ns	-3.49%
❌	Simulation	print_env_hello	7.7 µs	8.2 µs	-6.45%
❌	Memory	print_env_hello	128 B	1,152 B	-88.89%
❌	Memory	allocate	8.7 KB	9.7 KB	-10.27%