[fix] #4090 #3858: Fix having to pass IROHA_SKIP_WASM_CHECKS env variable with true

[Asem-Abdelhady]

Description

Change the checking parts in build.rs files to check if the env is passed during the build. this should only build the WASM builder if the code snippet will be used and in our case it will not be because the env variable is not passed.

[coveralls]

Pull Request Test Coverage Report for Build 7141206152

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 7017 unchanged lines in 130 files lost coverage.
• Overall coverage decreased (-3.2%) to 56.28%

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Files with Coverage Reduction	New Missed Lines	%
config/base/derive/src/view.rs	1	99.37%
config/src/block_sync.rs	1	95.0%
config/src/network.rs	1	93.75%
config/src/torii.rs	1	95.45%
config/src/wasm.rs	1	87.5%
core/src/smartcontracts/isi/block.rs	1	87.5%
config/src/kura.rs	2	79.41%
config/src/lib.rs	2	0.0%
ffi/src/option.rs	2	71.43%
config/src/genesis.rs	3	72.92%

Totals
Change from base Build 5423219773:	-3.2%
Covered Lines:	22995
Relevant Lines:	40858

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💛 - Coveralls

[DCNick3]

If we are gonna change that, we should at least rename the variable to have the inverted meaning, smth like IROHA_ENABLE_WASM_CHECKS

[mversic]

related #3858

[mversic]

we should remove formatting at build time and make sure in CI static analysis that we check formatting of client/tests/integration/smartcontracts workspace and of default_executor