Updating infinite spool unload, load, eject sequence to prevent excess nozzle oozing

[jimmyjon711]

Major Changes in this PR

• Changed order of eject when performing infinite spool change over, new order is tool unload -> eject spool -> load rollover lane.

Resolves: #549

Notes to Code Reviewers

How the changes in this PR are tested

• Tested and verified that new sequence works

PR Checklist: (Checked-off items are either done or do not apply to this PR)

• I have performed a self-review of my code
• CHANGELOG.md is updated (if end-user facing)
• Documentation updated in AT-Documentation repository
• Sent notification to software-design/software-discussions channel (as appropriate) requesting review
• If this PR address a GitHub issue, the issue number is referenced in the PR description

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[Copilot]

Pull Request Overview

This PR modifies the infinite spool changeover sequence to reduce nozzle oozing during filament changes. The new sequence unloads the tool, ejects the empty spool, and then loads the replacement lane - preventing the nozzle from oozing while the old spool is being ejected.

• Changed infinite spool sequence order: tool unload → eject spool → load rollover lane (previously: change tool → eject spool)
• Added defensive null checks using .get() for lane lookups before operations
• Updated version to 1.0.33

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
extras/AFC_lane.py	Refactored _perform_infinite_runout() to separate unload/load operations and perform spool ejection between them, with added null checks for lane validation
extras/AFC.py	Incremented version number from 1.0.32 to 1.0.33
CHANGELOG.md	Documented the infinite spool sequence change with clear explanation of the new order

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