add sh:and to ContainerShape for inheritance

[tgra]

Type of Change

* [ ] Update existing domain file

If updating:

* [ ] Additional constraints (non-breaking)

---

Domain

Domain file: container

---

Shape Details

Shape name(s):

Target class / node:

Files changed:

---

Shape Change

* [ ] New shape
* [ ] New version of existing shape
* [ ] Non-breaking constraint addition
* [ ] Documentation update

Description:

---

Immutability Confirmation

* [ ] Existing constraints were not modified
* [ ] Previously valid data remains valid
* [ ] If behaviour changed, a new shape/version was introduced

---

Examples

Valid example

Invalid example

---

Compatibility

* [ ] Fully backwards compatible
* [ ] May cause new validation failures
* [ ] Breaking change

Explanation if needed.

---

Validation

* [ ] SHACL validation run
* [ ] Example data tested

Tools used:

---

Reviewer Checklist

* [ ] Immutability respected
* [ ] Targeting is correct
* [ ] Constraints justified
* [ ] Examples match expected behaviour