CATCH_CONFIG_CONSOLE_WIDTH ignored for reconstructing expressions

[stinos]

Describe the bug
When the length of stringified lhs and rhs of an expression is more than 40 characters it gets split due to

Catch2/include/internal/catch_decomposer.cpp

Line 17 in 9fb38fc

if( lhs.size() + rhs.size() < 40 &&

This makes the output harder to parse automatically, leading to JohnnyHendriks/TestAdapter_Catch2#32.

Expected behavior
Split according to CATCH_CONFIG_CONSOLE_WIDTH instead of 40.

Reproduction steps
Code:

TEST_CASE( "BreakingLine" )
{
  CHECK( 100000000000 == 9999999 );
}

Produces:

xxx.cpp(yy): FAILED:
  CHECK( 100000000000 == 9999999 )
with expansion:
  100000000000 (0x174876e800)
  ==
  9999999 (0x98967f)

But with CATCH_CONFIG_CONSOLE_WIDTH set to 200 the expected output would be:

xxx.cpp(yy): FAILED:
  CHECK( 100000000000 == 9999999 )
with expansion:
  100000000000 (0x174876e800) == 9999999 (0x98967f)

Platform information:

• Catch version: v2.1.0

Additional context
Replacing 40 with e.g. (CATCH_CONFIG_CONSOLE_WIDTH - 2 - <current_indent>) is a potential fix.