Wouldn't that have a huge impact on the ecosystem of the moon? (if it has an ecosystem) Thinking that soon or later (after 1/10/100/1000) years the probe will

Wouldn't that have a huge impact on the ecosystem of the moon? (if it has an ecosystem) Thinking that soon or later (after 1/10/100/1000) years the probe will for any reason release its radioactive payload into that environment, therefore contaminating it. (kind of similar as well if it keeps generating warmth at least partially for years and years and years => maybe in that case bacteria might start to increase/evolve because of that warmth, and any later observation would have to take that effect into account, which might be difficult to separate from all the local&natural causes - or it could be as well the opposite, with the probe "burning"/killing existing bacteria because they're not used to that warmth)