refactor: invert --with-git to --without-git for comp build and prepare-sources

[Tonisal-byte]

azldev component build and azldev component prepare-sources defaulted to the legacy source prep flow, while azldev component render always used the dist-git flow with synthetic commit history. This inverts the default so all three commands are consistent.

Changes
preparesources.go / build.go: WithGitRepo bool → WithoutGitRepo bool; flag renamed --with-git → --without-git (default false = dist-git on by default). Condition logic inverted accordingly.
Warning message updated: fires when --skip-overlays is set and --without-git is not (i.e., git flow is enabled but will have no effect).
Tests (preparesources_test.go, build_test.go): assert --without-git is registered with default false; assert legacy --with-git does not exist.
CLI docs regenerated via mage docs.
Before / After

# Before: opt-in to dist-git flow
azldev component build -p curl --with-git

# After: dist-git is the default; opt out if needed
azldev component build -p curl
azldev component build -p curl --without-git  # legacy/no-git behavior

[Copilot]

Pull request overview

This PR flips azldev component build and azldev component prepare-sources from an opt-in dist-git/synthetic-history flow (--with-git) to a default-on flow with an opt-out flag (--without-git), aligning them with azldev component render behavior.

Changes:

• Renamed options WithGitRepo → WithoutGitRepo and renamed CLI flag --with-git → --without-git for component build and component prepare-sources, inverting the enabling logic.
• Updated flag registration tests to assert the new flag exists (default false) and the legacy flag does not exist.
• Updated scenario test project creation to initialize a git repo for templated projects where synthetic history is required.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
internal/app/azldev/cmds/component/preparesources.go	Renames/inverts git-flow flag and updates warning/option wiring for dist-git source prep.
internal/app/azldev/cmds/component/preparesources_test.go	Verifies --without-git flag registration/defaults and absence of --with-git.
internal/app/azldev/cmds/component/build.go	Renames/inverts git-flow flag and updates source preparer options accordingly.
internal/app/azldev/cmds/component/build_test.go	Verifies --without-git flag registration/defaults and absence of --with-git.
scenario/internal/projecttest/templatetestproject.go	Adds an option to initialize templated test projects as git repos with an initial commit.
scenario/component_build_test.go	Ensures scenario build tests create projects initialized as git repos to support default dist-git behavior.