* fix(nodes): validate every certificate in the node mTLS trust bundle
AppendCertsFromPEM reports success once a single certificate parses, so a
trust bundle whose later entries are damaged or truncated was accepted with
those entries silently absent from the pool. Parse and validate every PEM
block instead, and reject the bundle if any of them is malformed.
* fix(mtls): reject malformed certificate bundle layout
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Co-authored-by: n0ctal <293235942+n0ctal@users.noreply.github.com>
n0ctal