Fix bundle outdated --groups to actually group output

[nevinera]

Purpose

Update bundle outdated --groups to produce its table of output actually sorted by group.

Analysis

print_indented unconditionally sorted table rows by gem name, discarding the group clustering that --groups had already computed, so --groups produced output identical to plain outdated (#9333). Skip that re-sort when a --group/--groups option is active, since specs_for_outdated_check already sorts by name and group_by preserves that order within each group.

What was the end-user or developer problem that led to this PR?

A (correct) observation in #9333 that bundle outdated --groups was not actually grouping at all.

What is your fix for the problem, implemented in this PR?

• Update the existing test on this to assert a more obviously failing result - because listing the gems alphabetically also resulted in them being accidentally "grouped"
• Add a sort = true second positional parameter to print_indented!, which controls whether to sort its results before printing
• in print_gems_table, determine whether to sort based on the options_include_groups attr, which is true if --groups or --group foo is supplied.

Make sure the following tasks are checked

• Describe the problem / feature
• Write tests for features and bug fixes
• Write code to solve the problem
• Make sure you follow the current code style and write meaningful commit messages without tags

[Copilot]

Pull request overview

This PR fixes bundle outdated --groups so the output is actually grouped by Bundler group, instead of being re-sorted alphabetically by gem name at print time (which previously erased the grouping computed earlier).

Changes:

• Add an optional sort parameter to print_indented to allow callers to skip row re-sorting.
• When --groups/--group is active, print the gems table without re-sorting so group clustering is preserved.
• Strengthen the existing --groups spec to fail more reliably by adding another outdated gem in the same non-default group.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
spec/commands/outdated_spec.rb	Updates the --groups expectation to assert true group clustering by introducing an additional gem in the same group.
lib/bundler/cli/outdated.rb	Skips the print-time sort when group-based output is requested, preserving the pre-grouped ordering.

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[hsbt]

I added three commits on top of your branch. Skipping the name sort also affected --group NAME, which listed a group spread over several group sets out of name order, so it now filters the name-sorted list and print_indented no longer sorts at all. With --groups, the group names of each gem are sorted before grouping, so group :test, :development and group :development, :test end up together, and gems without groups such as transitive dependencies come last. Each case has a spec.