[clang][deps] Properly capture the global module and '\n' for all module directives (#148685)

Previously, the newline after a module directive was not properly
captured and printed by `clang::printDependencyDirectivesAsSource`.

According to P1857R3, each directive must, after skipping horizontal
whitespace, appear at the start of a logical line. Because the newline
after module directives was missing, this invalidated the following
line.
This fixes tests that were previously in violation of P1857R3,
including for Objective-C directives, which should also comply with
P1857R3.

This also ensures that the global module fragment `module;` is captured
by the dependency directives scanner.

0 files changed, 0 insertions, 0 deletions