fix Issue 22399 - importC: Error: static variable cannot be read at compile time

fix Issue 22405 - importC: Error: cannot modify 'const' expression '(*s).field'

fix Issue 22413 - importC: Error: array index 0 is out of bounds

Fix Issue 21438 - Compiler segfault on static array in a struct at CTFE

fix Issue 22406 - importC: Error: 'switch' statement without a 'default'; use 'final switch' or add 'default: assert(0);' or add 'default: break;'

Fix Issue 22410 - [REG2.094] function with tuple parameter with default argument fails if there's a qualifier