chore: make more functions be const

[yjhmelody]

No description provided.

[codecov-commenter]

Codecov Report

Merging #1574 (28cd24d) into master (8c5ee37) will decrease coverage by 0.08%.
The diff coverage is 71.42%.

@@            Coverage Diff             @@
##           master    #1574      +/-   ##
==========================================
- Coverage   71.61%   71.52%   -0.09%     
==========================================
  Files         205      205              
  Lines        6298     6290       -8     
==========================================
- Hits         4510     4499      -11     
- Misses       1788     1791       +3     

Impacted Files	Coverage Δ
crates/env/src/call/call_builder.rs	0.00% <ø> (ø)
crates/ink/src/env_access.rs	9.09% <ø> (ø)
crates/primitives/src/types.rs	20.00% <0.00%> (-13.34%)	⬇️
crates/env/src/engine/off_chain/impls.rs	47.64% <100.00%> (ø)
crates/storage/src/lazy/mapping.rs	66.66% <100.00%> (-1.52%)	⬇️
crates/storage/src/lazy/mod.rs	71.42% <100.00%> (-1.30%)	⬇️
crates/allocator/src/bump.rs	86.55% <0.00%> (-2.71%)	⬇️

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[ascjones]

LGTM!

Next time please include a description for the PR, even if relatively simple.