test: add maxAutomaticTokenAssociations tests (#2390)

* test: add max auto associate tests

Signed-off-by: Ivaylo Nikolov <ivaylo.nikolov@limechain.tech>

* test(style): timeout consistency

Signed-off-by: Ivaylo Nikolov <ivaylo.nikolov@limechain.tech>

* test: using transfer_amount const instead of total_supply when transfering tokens

Signed-off-by: Ivaylo Nikolov <ivaylo.nikolov@limechain.tech>

* test: use serial ids instead of hardcoded integers

Signed-off-by: Ivaylo Nikolov <ivaylo.nikolov@limechain.tech>

* test: approve before transfer for token association

Signed-off-by: Ivaylo Nikolov <ivaylo.nikolov@limechain.tech>

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Signed-off-by: Ivaylo Nikolov <ivaylo.nikolov@limechain.tech>