fix(edge-bundle): include hidden /oem entries in /oem directory

[rrpolanco]

Summary

Update support-bundle/support-bundle-edge.sh so the /oem collection step includes hidden files and directories such as .spectrocloud.

Problem

The script currently copies /oem content with:

cp -prf /oem/* $TMPDIR/oem

Because * does not match dot-prefixed entries, hidden files and directories are omitted from the support bundle even though they appear in the /oem/files listing.

Change

Replace the glob-based copy with:

cp -prf /oem/. $TMPDIR/oem

This preserves the existing destination layout while ensuring hidden entries are included.

Impact

This change allows edge support bundles to include:

• /oem/.spectrocloud
• other hidden /oem entries such as .revision and .stylus-state*

Scope

• Narrowly scoped to /oem collection in stylus-files()
• No broader changes to other copy operations in this script

Validation

Manually verified on a airgap/local edge host where I confirmed the script collected hidden files and directory entries such as /oem/.spectrocloud/{tui,seed,mtls}.